---
_id: '12213'
abstract:
- lang: eng
text: 'Motivated by properties-controlling potential of the strain, we investigate
strain dependence of structure, electronic, and magnetic properties of Sr2IrO4
using complementary theoretical tools: ab-initio calculations, analytical approaches
(rigid octahedra picture, Slater-Koster integrals), and extended t−J model. We
find that strain affects both Ir-Ir distance and Ir-O-Ir angle, and the rigid
octahedra picture is not relevant. Second, we find fundamentally different behavior
for compressive and tensile strain. One remarkable feature is the formation of
two subsets of bond- and orbital-dependent carriers, a compass-like model, under
compression. This originates from the strain-induced renormalization of the Ir-O-Ir
superexchange and O on-site energy. We also show that under compressive (tensile)
strain, Fermi surface becomes highly dispersive (relatively flat). Already at
a tensile strain of 1.5%, we observe spectral weight redistribution, with the
low-energy band acquiring almost purely singlet character. These results can be
directly compared with future experiments.'
acknowledgement: E.M.P. thanks Eugenio Paris, Thorsten Schmitt, Krzysztof Wohlfeld,
and other coauthors for an inspiring previous collaboration23, and is grateful to
Gang Cao, Ambrose Seo, and Jungho Kim for insightful discussions. R.R. acknowledges
helpful discussion with Sanjeev Kumar and Manuel Richter. This project has received
funding from the European Union’s Horizon 2020 research and innovation program under
the Marie Sklodowska-Curie grant agreement No 754411. C.C.C. acknowledges support
from the U.S. National Science Foundation Award No. DMR-2142801.
article_number: '90'
article_processing_charge: No
article_type: original
author:
- first_name: Ekaterina
full_name: Paerschke, Ekaterina
id: 8275014E-6063-11E9-9B7F-6338E6697425
last_name: Paerschke
orcid: 0000-0003-0853-8182
- first_name: Wei-Chih
full_name: Chen, Wei-Chih
last_name: Chen
- first_name: Rajyavardhan
full_name: Ray, Rajyavardhan
last_name: Ray
- first_name: Cheng-Chien
full_name: Chen, Cheng-Chien
last_name: Chen
citation:
ama: Paerschke E, Chen W-C, Ray R, Chen C-C. Evolution of electronic and magnetic
properties of Sr₂IrO₄ under strain. npj Quantum Materials. 2022;7. doi:10.1038/s41535-022-00496-w
apa: Paerschke, E., Chen, W.-C., Ray, R., & Chen, C.-C. (2022). Evolution of
electronic and magnetic properties of Sr₂IrO₄ under strain. Npj Quantum Materials.
Springer Nature. https://doi.org/10.1038/s41535-022-00496-w
chicago: Paerschke, Ekaterina, Wei-Chih Chen, Rajyavardhan Ray, and Cheng-Chien
Chen. “Evolution of Electronic and Magnetic Properties of Sr₂IrO₄ under Strain.”
Npj Quantum Materials. Springer Nature, 2022. https://doi.org/10.1038/s41535-022-00496-w.
ieee: E. Paerschke, W.-C. Chen, R. Ray, and C.-C. Chen, “Evolution of electronic
and magnetic properties of Sr₂IrO₄ under strain,” npj Quantum Materials,
vol. 7. Springer Nature, 2022.
ista: Paerschke E, Chen W-C, Ray R, Chen C-C. 2022. Evolution of electronic and
magnetic properties of Sr₂IrO₄ under strain. npj Quantum Materials. 7, 90.
mla: Paerschke, Ekaterina, et al. “Evolution of Electronic and Magnetic Properties
of Sr₂IrO₄ under Strain.” Npj Quantum Materials, vol. 7, 90, Springer Nature,
2022, doi:10.1038/s41535-022-00496-w.
short: E. Paerschke, W.-C. Chen, R. Ray, C.-C. Chen, Npj Quantum Materials 7 (2022).
date_created: 2023-01-16T09:46:01Z
date_published: 2022-09-10T00:00:00Z
date_updated: 2023-08-04T09:23:43Z
day: '10'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1038/s41535-022-00496-w
ec_funded: 1
external_id:
isi:
- '000852381200003'
file:
- access_level: open_access
checksum: d93b477b5b95c0d1b8f9fef90a81f565
content_type: application/pdf
creator: dernst
date_created: 2023-01-27T07:59:27Z
date_updated: 2023-01-27T07:59:27Z
file_id: '12414'
file_name: 2022_NPJ_Paerschke.pdf
file_size: 1852598
relation: main_file
success: 1
file_date_updated: 2023-01-27T07:59:27Z
has_accepted_license: '1'
intvolume: ' 7'
isi: 1
keyword:
- Condensed Matter Physics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: npj Quantum Materials
publication_identifier:
eissn:
- 2397-4648
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41535-022-00510-1
scopus_import: '1'
status: public
title: Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 7
year: '2022'
...
---
_id: '12154'
abstract:
- lang: eng
text: We review our theoretical results of the sound propagation in two-dimensional
(2D) systems of ultracold fermionic and bosonic atoms. In the superfluid phase,
characterized by the spontaneous symmetry breaking of the U(1) symmetry, there
is the coexistence of first and second sound. In the case of weakly-interacting
repulsive bosons, we model the recent measurements of the sound velocities of
39K atoms in 2D obtained in the weakly-interacting regime and around the Berezinskii–Kosterlitz–Thouless
(BKT) superfluid-to-normal transition temperature. In particular, we perform a
quite accurate computation of the superfluid density and show that it is reasonably
consistent with the experimental results. For superfluid attractive fermions,
we calculate the first and second sound velocities across the whole BCS-BEC crossover.
In the low-temperature regime, we reproduce the recent measurements of first-sound
speed with 6Li atoms. We also predict that there is mixing between sound modes
only in the finite-temperature BEC regime.
acknowledgement: "This research is partially supported by University of Padova, BIRD
grant “Ultracold atoms\r\nin curved geometries”. KF is supported by Fondazione CARIPARO
with a PhD fellowship. AT is\r\npartially supported by French National Research
Agency ANR Grant Droplets N. ANR-19-CE30-0003-02. LS thanks Herwig Ott and Sandro
Wimberger for their kind invitation to the\r\nInternational Workshop “Quantum Transport
with ultracold atoms” (2022)."
article_number: '2182'
article_processing_charge: Yes
article_type: original
author:
- first_name: Luca
full_name: Salasnich, Luca
last_name: Salasnich
- first_name: Alberto
full_name: Cappellaro, Alberto
id: 9d13b3cb-30a2-11eb-80dc-f772505e8660
last_name: Cappellaro
orcid: 0000-0001-6110-2359
- first_name: Koichiro
full_name: Furutani, Koichiro
last_name: Furutani
- first_name: Andrea
full_name: Tononi, Andrea
last_name: Tononi
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
citation:
ama: Salasnich L, Cappellaro A, Furutani K, Tononi A, Bighin G. First and second
sound in two-dimensional bosonic and fermionic superfluids. Symmetry. 2022;14(10).
doi:10.3390/sym14102182
apa: Salasnich, L., Cappellaro, A., Furutani, K., Tononi, A., & Bighin, G. (2022).
First and second sound in two-dimensional bosonic and fermionic superfluids. Symmetry.
MDPI. https://doi.org/10.3390/sym14102182
chicago: Salasnich, Luca, Alberto Cappellaro, Koichiro Furutani, Andrea Tononi,
and Giacomo Bighin. “First and Second Sound in Two-Dimensional Bosonic and Fermionic
Superfluids.” Symmetry. MDPI, 2022. https://doi.org/10.3390/sym14102182.
ieee: L. Salasnich, A. Cappellaro, K. Furutani, A. Tononi, and G. Bighin, “First
and second sound in two-dimensional bosonic and fermionic superfluids,” Symmetry,
vol. 14, no. 10. MDPI, 2022.
ista: Salasnich L, Cappellaro A, Furutani K, Tononi A, Bighin G. 2022. First and
second sound in two-dimensional bosonic and fermionic superfluids. Symmetry. 14(10),
2182.
mla: Salasnich, Luca, et al. “First and Second Sound in Two-Dimensional Bosonic
and Fermionic Superfluids.” Symmetry, vol. 14, no. 10, 2182, MDPI, 2022,
doi:10.3390/sym14102182.
short: L. Salasnich, A. Cappellaro, K. Furutani, A. Tononi, G. Bighin, Symmetry
14 (2022).
date_created: 2023-01-12T12:08:31Z
date_published: 2022-10-17T00:00:00Z
date_updated: 2023-08-09T10:13:17Z
day: '17'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.3390/sym14102182
external_id:
isi:
- '000875039200001'
file:
- access_level: open_access
checksum: 9b6bd0e484834dd76d7b26e3c5fba8bd
content_type: application/pdf
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date_created: 2023-01-24T10:56:12Z
date_updated: 2023-01-24T10:56:12Z
file_id: '12361'
file_name: 2022_Symmetry_Salsnich.pdf
file_size: 843723
relation: main_file
success: 1
file_date_updated: 2023-01-24T10:56:12Z
has_accepted_license: '1'
intvolume: ' 14'
isi: 1
issue: '10'
keyword:
- Physics and Astronomy (miscellaneous)
- General Mathematics
- Chemistry (miscellaneous)
- Computer Science (miscellaneous)
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Symmetry
publication_identifier:
issn:
- 2073-8994
publication_status: published
publisher: MDPI
quality_controlled: '1'
scopus_import: '1'
status: public
title: First and second sound in two-dimensional bosonic and fermionic superfluids
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 14
year: '2022'
...
---
_id: '10759'
abstract:
- lang: eng
text: In this Thesis, I study composite quantum impurities with variational techniques,
both inspired by machine learning as well as fully analytic. I supplement this
with exploration of other applications of machine learning, in particular artificial
neural networks, in many-body physics. In Chapters 3 and 4, I study quasiparticle
systems with variational approach. I derive a Hamiltonian describing the angulon
quasiparticle in the presence of a magnetic field. I apply analytic variational
treatment to this Hamiltonian. Then, I introduce a variational approach for non-additive
systems, based on artificial neural networks. I exemplify this approach on the
example of the polaron quasiparticle (Fröhlich Hamiltonian). In Chapter 5, I continue
using artificial neural networks, albeit in a different setting. I apply artificial
neural networks to detect phases from snapshots of two types physical systems.
Namely, I study Monte Carlo snapshots of multilayer classical spin models as well
as molecular dynamics maps of colloidal systems. The main type of networks that
I use here are convolutional neural networks, known for their applicability to
image data.
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Wojciech
full_name: Rzadkowski, Wojciech
id: 48C55298-F248-11E8-B48F-1D18A9856A87
last_name: Rzadkowski
orcid: 0000-0002-1106-4419
citation:
ama: Rzadkowski W. Analytic and machine learning approaches to composite quantum
impurities. 2022. doi:10.15479/at:ista:10759
apa: Rzadkowski, W. (2022). Analytic and machine learning approaches to composite
quantum impurities. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:10759
chicago: Rzadkowski, Wojciech. “Analytic and Machine Learning Approaches to Composite
Quantum Impurities.” Institute of Science and Technology Austria, 2022. https://doi.org/10.15479/at:ista:10759.
ieee: W. Rzadkowski, “Analytic and machine learning approaches to composite quantum
impurities,” Institute of Science and Technology Austria, 2022.
ista: Rzadkowski W. 2022. Analytic and machine learning approaches to composite
quantum impurities. Institute of Science and Technology Austria.
mla: Rzadkowski, Wojciech. Analytic and Machine Learning Approaches to Composite
Quantum Impurities. Institute of Science and Technology Austria, 2022, doi:10.15479/at:ista:10759.
short: W. Rzadkowski, Analytic and Machine Learning Approaches to Composite Quantum
Impurities, Institute of Science and Technology Austria, 2022.
date_created: 2022-02-16T13:27:37Z
date_published: 2022-02-21T00:00:00Z
date_updated: 2024-02-28T13:01:59Z
day: '21'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: MiLe
doi: 10.15479/at:ista:10759
ec_funded: 1
file:
- access_level: closed
checksum: 0fc54ad1eaede879c665ac9b53c93e22
content_type: application/zip
creator: wrzadkow
date_created: 2022-02-21T13:58:16Z
date_updated: 2022-02-22T07:20:12Z
file_id: '10785'
file_name: Rzadkowski_thesis_final_source.zip
file_size: 17668233
relation: source_file
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checksum: 22d2d7af37ca31f6b1730c26cac7bced
content_type: application/pdf
creator: wrzadkow
date_created: 2022-02-21T14:02:54Z
date_updated: 2022-02-21T14:02:54Z
file_id: '10786'
file_name: Rzadkowski_thesis_final.pdf
file_size: 13307331
relation: main_file
success: 1
file_date_updated: 2022-02-22T07:20:12Z
has_accepted_license: '1'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: '120'
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '10762'
relation: part_of_dissertation
status: public
- id: '8644'
relation: part_of_dissertation
status: public
- id: '7956'
relation: part_of_dissertation
status: public
- id: '415'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
title: Analytic and machine learning approaches to composite quantum impurities
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2022'
...
---
_id: '10585'
abstract:
- lang: eng
text: Recently it was shown that anyons on the two-sphere naturally arise from a
system of molecular impurities exchanging angular momentum with a many-particle
bath (Phys. Rev. Lett. 126, 015301 (2021)). Here we further advance this approach
and rigorously demonstrate that in the experimentally realized regime the lowest
spectrum of two linear molecules immersed in superfluid helium corresponds to
the spectrum of two anyons on the sphere. We develop the formalism within the
framework of the recently experimentally observed angulon quasiparticle
acknowledgement: D. Lundholm acknowledges financial support from the Göran Gustafsson
Foundation (grant no. 1804).
article_number: '106'
article_processing_charge: Yes
article_type: original
author:
- first_name: Morris
full_name: Brooks, Morris
id: B7ECF9FC-AA38-11E9-AC9A-0930E6697425
last_name: Brooks
orcid: 0000-0002-6249-0928
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Douglas
full_name: Lundholm, Douglas
last_name: Lundholm
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
citation:
ama: Brooks M, Lemeshko M, Lundholm D, Yakaboylu E. Emergence of anyons on the two-sphere
in molecular impurities. Atoms. 2021;9(4). doi:10.3390/atoms9040106
apa: Brooks, M., Lemeshko, M., Lundholm, D., & Yakaboylu, E. (2021). Emergence
of anyons on the two-sphere in molecular impurities. Atoms. MDPI. https://doi.org/10.3390/atoms9040106
chicago: Brooks, Morris, Mikhail Lemeshko, Douglas Lundholm, and Enderalp Yakaboylu.
“Emergence of Anyons on the Two-Sphere in Molecular Impurities.” Atoms.
MDPI, 2021. https://doi.org/10.3390/atoms9040106.
ieee: M. Brooks, M. Lemeshko, D. Lundholm, and E. Yakaboylu, “Emergence of anyons
on the two-sphere in molecular impurities,” Atoms, vol. 9, no. 4. MDPI,
2021.
ista: Brooks M, Lemeshko M, Lundholm D, Yakaboylu E. 2021. Emergence of anyons on
the two-sphere in molecular impurities. Atoms. 9(4), 106.
mla: Brooks, Morris, et al. “Emergence of Anyons on the Two-Sphere in Molecular
Impurities.” Atoms, vol. 9, no. 4, 106, MDPI, 2021, doi:10.3390/atoms9040106.
short: M. Brooks, M. Lemeshko, D. Lundholm, E. Yakaboylu, Atoms 9 (2021).
date_created: 2022-01-02T23:01:33Z
date_published: 2021-12-02T00:00:00Z
date_updated: 2023-06-15T14:51:49Z
day: '02'
ddc:
- '530'
department:
- _id: MiLe
- _id: RoSe
doi: 10.3390/atoms9040106
external_id:
arxiv:
- '2108.06966'
file:
- access_level: open_access
checksum: d0e44b95f36c9e06724f66832af0f8c3
content_type: application/pdf
creator: alisjak
date_created: 2022-01-03T10:15:05Z
date_updated: 2022-01-03T10:15:05Z
file_id: '10592'
file_name: 2021_Atoms_Brooks.pdf
file_size: 303070
relation: main_file
success: 1
file_date_updated: 2022-01-03T10:15:05Z
has_accepted_license: '1'
intvolume: ' 9'
issue: '4'
keyword:
- anyons
- quasiparticles
- Quantum Hall Effect
- topological states of matter
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
publication: Atoms
publication_identifier:
eissn:
- 2218-2004
publication_status: published
publisher: MDPI
quality_controlled: '1'
scopus_import: '1'
status: public
title: Emergence of anyons on the two-sphere in molecular impurities
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2021'
...
---
_id: '8816'
abstract:
- lang: eng
text: Area-dependent quantum field theory is a modification of two-dimensional topological
quantum field theory, where one equips each connected component of a bordism with
a positive real number—interpreted as area—which behaves additively under glueing.
As opposed to topological theories, in area-dependent theories the state spaces
can be infinite-dimensional. We introduce the notion of regularised Frobenius
algebras in Hilbert spaces and show that area-dependent theories are in one-to-one
correspondence to commutative regularised Frobenius algebras. We also provide
a state sum construction for area-dependent theories. Our main example is two-dimensional
Yang–Mills theory with compact gauge group, which we treat in detail.
acknowledgement: The authors thank Yuki Arano, Nils Carqueville, Alexei Davydov, Reiner
Lauterbach, Pau Enrique Moliner, Chris Heunen, André Henriques, Ehud Meir, Catherine
Meusburger, Gregor Schaumann, Richard Szabo and Stefan Wagner for helpful discussions
and comments. We also thank the referees for their detailed comments which significantly
improved the exposition of this paper. LS is supported by the DFG Research Training
Group 1670 “Mathematics Inspired by String Theory and Quantum Field Theory”. Open
access funding provided by Institute of Science and Technology (IST Austria).
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Ingo
full_name: Runkel, Ingo
last_name: Runkel
- first_name: Lorant
full_name: Szegedy, Lorant
id: 7943226E-220E-11EA-94C7-D59F3DDC885E
last_name: Szegedy
orcid: 0000-0003-2834-5054
citation:
ama: Runkel I, Szegedy L. Area-dependent quantum field theory. Communications
in Mathematical Physics. 2021;381(1):83–117. doi:10.1007/s00220-020-03902-1
apa: Runkel, I., & Szegedy, L. (2021). Area-dependent quantum field theory.
Communications in Mathematical Physics. Springer Nature. https://doi.org/10.1007/s00220-020-03902-1
chicago: Runkel, Ingo, and Lorant Szegedy. “Area-Dependent Quantum Field Theory.”
Communications in Mathematical Physics. Springer Nature, 2021. https://doi.org/10.1007/s00220-020-03902-1.
ieee: I. Runkel and L. Szegedy, “Area-dependent quantum field theory,” Communications
in Mathematical Physics, vol. 381, no. 1. Springer Nature, pp. 83–117, 2021.
ista: Runkel I, Szegedy L. 2021. Area-dependent quantum field theory. Communications
in Mathematical Physics. 381(1), 83–117.
mla: Runkel, Ingo, and Lorant Szegedy. “Area-Dependent Quantum Field Theory.” Communications
in Mathematical Physics, vol. 381, no. 1, Springer Nature, 2021, pp. 83–117,
doi:10.1007/s00220-020-03902-1.
short: I. Runkel, L. Szegedy, Communications in Mathematical Physics 381 (2021)
83–117.
date_created: 2020-11-29T23:01:17Z
date_published: 2021-01-01T00:00:00Z
date_updated: 2023-08-04T11:13:35Z
day: '01'
ddc:
- '510'
department:
- _id: MiLe
doi: 10.1007/s00220-020-03902-1
external_id:
isi:
- '000591139000001'
file:
- access_level: open_access
checksum: 6f451f9c2b74bedbc30cf884a3e02670
content_type: application/pdf
creator: dernst
date_created: 2021-02-03T15:00:30Z
date_updated: 2021-02-03T15:00:30Z
file_id: '9081'
file_name: 2021_CommMathPhys_Runkel.pdf
file_size: 790526
relation: main_file
success: 1
file_date_updated: 2021-02-03T15:00:30Z
has_accepted_license: '1'
intvolume: ' 381'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 83–117
project:
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: Communications in Mathematical Physics
publication_identifier:
eissn:
- '14320916'
issn:
- '00103616'
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Area-dependent quantum field theory
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 381
year: '2021'
...
---
_id: '9005'
abstract:
- lang: eng
text: Studies on the experimental realization of two-dimensional anyons in terms
of quasiparticles have been restricted, so far, to only anyons on the plane. It
is known, however, that the geometry and topology of space can have significant
effects on quantum statistics for particles moving on it. Here, we have undertaken
the first step toward realizing the emerging fractional statistics for particles
restricted to move on the sphere instead of on the plane. We show that such a
model arises naturally in the context of quantum impurity problems. In particular,
we demonstrate a setup in which the lowest-energy spectrum of two linear bosonic
or fermionic molecules immersed in a quantum many-particle environment can coincide
with the anyonic spectrum on the sphere. This paves the way toward the experimental
realization of anyons on the sphere using molecular impurities. Furthermore, since
a change in the alignment of the molecules corresponds to the exchange of the
particles on the sphere, such a realization reveals a novel type of exclusion
principle for molecular impurities, which could also be of use as a powerful technique
to measure the statistics parameter. Finally, our approach opens up a simple numerical
route to investigate the spectra of many anyons on the sphere. Accordingly, we
present the spectrum of two anyons on the sphere in the presence of a Dirac monopole
field.
acknowledgement: "We are grateful to A. Ghazaryan for valuable discussions and also
thank the anonymous referees for comments. D.L. acknowledges financial support from
the G¨oran Gustafsson Foundation (grant no. 1804) and LMU Munich. M.L. gratefully
acknowledges financial support\r\nby the European Research Council (ERC) under the
European Union’s Horizon 2020 research and innovation programme (grant agreements
No 801770)."
article_number: '015301'
article_processing_charge: No
article_type: original
author:
- first_name: Morris
full_name: Brooks, Morris
id: B7ECF9FC-AA38-11E9-AC9A-0930E6697425
last_name: Brooks
orcid: 0000-0002-6249-0928
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: D.
full_name: Lundholm, D.
last_name: Lundholm
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
citation:
ama: Brooks M, Lemeshko M, Lundholm D, Yakaboylu E. Molecular impurities as a realization
of anyons on the two-sphere. Physical Review Letters. 2021;126(1). doi:10.1103/PhysRevLett.126.015301
apa: Brooks, M., Lemeshko, M., Lundholm, D., & Yakaboylu, E. (2021). Molecular
impurities as a realization of anyons on the two-sphere. Physical Review Letters.
American Physical Society. https://doi.org/10.1103/PhysRevLett.126.015301
chicago: Brooks, Morris, Mikhail Lemeshko, D. Lundholm, and Enderalp Yakaboylu.
“Molecular Impurities as a Realization of Anyons on the Two-Sphere.” Physical
Review Letters. American Physical Society, 2021. https://doi.org/10.1103/PhysRevLett.126.015301.
ieee: M. Brooks, M. Lemeshko, D. Lundholm, and E. Yakaboylu, “Molecular impurities
as a realization of anyons on the two-sphere,” Physical Review Letters,
vol. 126, no. 1. American Physical Society, 2021.
ista: Brooks M, Lemeshko M, Lundholm D, Yakaboylu E. 2021. Molecular impurities
as a realization of anyons on the two-sphere. Physical Review Letters. 126(1),
015301.
mla: Brooks, Morris, et al. “Molecular Impurities as a Realization of Anyons on
the Two-Sphere.” Physical Review Letters, vol. 126, no. 1, 015301, American
Physical Society, 2021, doi:10.1103/PhysRevLett.126.015301.
short: M. Brooks, M. Lemeshko, D. Lundholm, E. Yakaboylu, Physical Review Letters
126 (2021).
date_created: 2021-01-17T23:01:10Z
date_published: 2021-01-08T00:00:00Z
date_updated: 2023-08-07T13:32:10Z
day: '08'
department:
- _id: MiLe
- _id: RoSe
doi: 10.1103/PhysRevLett.126.015301
ec_funded: 1
external_id:
arxiv:
- '2009.05948'
isi:
- '000606325000003'
intvolume: ' 126'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2009.05948
month: '01'
oa: 1
oa_version: Preprint
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review Letters
publication_identifier:
eissn:
- '10797114'
issn:
- '00319007'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News on IST Homepage
relation: press_release
url: https://ist.ac.at/en/news/dancing-molecules-and-two-dimensional-particles/
record:
- id: '12390'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Molecular impurities as a realization of anyons on the two-sphere
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 126
year: '2021'
...
---
_id: '9093'
abstract:
- lang: eng
text: We employ the Gross-Pitaevskii equation to study acoustic emission generated
in a uniform Bose gas by a static impurity. The impurity excites a sound-wave
packet, which propagates through the gas. We calculate the shape of this wave
packet in the limit of long wave lengths, and argue that it is possible to extract
properties of the impurity by observing this shape. We illustrate here this possibility
for a Bose gas with a trapped impurity atom -- an example of a relevant experimental
setup. Presented results are general for all one-dimensional systems described
by the nonlinear Schrödinger equation and can also be used in nonatomic systems,
e.g., to analyze light propagation in nonlinear optical media. Finally, we calculate
the shape of the sound-wave packet for a three-dimensional Bose gas assuming a
spherically symmetric perturbation.
acknowledgement: "We acknowledge fruitful discussions with Dr. Simos Mistakidis regarding
beyond mean-field\r\neffects in our system. We also thank Prof. Maxim Olshanii for
valuable suggestions to improve\r\nthe manuscript.O.V.M acknowledges the support
from the National Science Foundation\r\nthrough grants No. PHY-1402249, No. PHY-1607221,
and No. PHY-1912542 and the\r\nBinational (US-Israel) Science Foundation through
grant No. 2015616, as well as by the Israel\r\nScience Foundation (grant No. 1287/17)
and from the German Aeronautics and Space Administration\r\n(DLR) through Grant
No. 50WM1957. This work has also received funding from\r\nthe DFG Project No.413495248
[VO 2437/1-1] and European Union’s Horizon 2020 research\r\nand innovation programme
under the Marie Skłodowska-Curie Grant Agreement No. 754411\r\n(A. G. V.)"
article_number: '025'
article_processing_charge: No
article_type: original
author:
- first_name: Oleksandr
full_name: Marchukov, Oleksandr
last_name: Marchukov
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Marchukov O, Volosniev A. Shape of a sound wave in a weakly-perturbed Bose
gas. SciPost Physics. 2021;10(2). doi:10.21468/scipostphys.10.2.025
apa: Marchukov, O., & Volosniev, A. (2021). Shape of a sound wave in a weakly-perturbed
Bose gas. SciPost Physics. SciPost Foundation. https://doi.org/10.21468/scipostphys.10.2.025
chicago: Marchukov, Oleksandr, and Artem Volosniev. “Shape of a Sound Wave in a
Weakly-Perturbed Bose Gas.” SciPost Physics. SciPost Foundation, 2021.
https://doi.org/10.21468/scipostphys.10.2.025.
ieee: O. Marchukov and A. Volosniev, “Shape of a sound wave in a weakly-perturbed
Bose gas,” SciPost Physics, vol. 10, no. 2. SciPost Foundation, 2021.
ista: Marchukov O, Volosniev A. 2021. Shape of a sound wave in a weakly-perturbed
Bose gas. SciPost Physics. 10(2), 025.
mla: Marchukov, Oleksandr, and Artem Volosniev. “Shape of a Sound Wave in a Weakly-Perturbed
Bose Gas.” SciPost Physics, vol. 10, no. 2, 025, SciPost Foundation, 2021,
doi:10.21468/scipostphys.10.2.025.
short: O. Marchukov, A. Volosniev, SciPost Physics 10 (2021).
date_created: 2021-02-04T12:39:24Z
date_published: 2021-02-03T00:00:00Z
date_updated: 2023-08-07T13:39:37Z
day: '03'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.21468/scipostphys.10.2.025
ec_funded: 1
external_id:
arxiv:
- '2004.08075'
isi:
- '000646783100027'
file:
- access_level: open_access
checksum: 9fd614b7ab49999e7267874df2582f7e
content_type: application/pdf
creator: dernst
date_created: 2021-02-09T07:06:22Z
date_updated: 2021-02-09T07:06:22Z
file_id: '9105'
file_name: 2021_SciPostPhysics_Marchukov.pdf
file_size: 666512
relation: main_file
success: 1
file_date_updated: 2021-02-09T07:06:22Z
has_accepted_license: '1'
intvolume: ' 10'
isi: 1
issue: '2'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: SciPost Physics
publication_identifier:
issn:
- 2542-4653
publication_status: published
publisher: SciPost Foundation
quality_controlled: '1'
status: public
title: Shape of a sound wave in a weakly-perturbed Bose gas
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 10
year: '2021'
...
---
_id: '9606'
abstract:
- lang: eng
text: Sound propagation is a macroscopic manifestation of the interplay between
the equilibrium thermodynamics and the dynamical transport properties of fluids.
Here, for a two-dimensional system of ultracold fermions, we calculate the first
and second sound velocities across the whole BCS-BEC crossover, and we analyze
the system response to an external perturbation. In the low-temperature regime
we reproduce the recent measurements [Phys. Rev. Lett. 124, 240403 (2020)] of
the first sound velocity, which, due to the decoupling of density and entropy
fluctuations, is the sole mode excited by a density probe. Conversely, a heat
perturbation excites only the second sound, which, being sensitive to the superfluid
depletion, vanishes in the deep BCS regime and jumps discontinuously to zero at
the Berezinskii-Kosterlitz-Thouless superfluid transition. A mixing between the
modes occurs only in the finite-temperature BEC regime, where our theory converges
to the purely bosonic results.
acknowledgement: "G.B. acknowledges support from the Austrian Science Fund (FWF),
under Project No. M2641-N27. This work was\r\npartially supported by the University
of Padua, BIRD project “Superfluid properties of Fermi gases in optical potentials.”\r\nThe
authors thank Miki Ota, Tomoki Ozawa, Sandro Stringari, Tilman Enss, Hauke Biss,
Henning Moritz, and Nicolò Defenu for fruitful discussions. The authors thank Henning
Moritz and Markus Bohlen for providing their experimental\r\ndata."
article_number: L061303
article_processing_charge: No
article_type: letter_note
author:
- first_name: A.
full_name: Tononi, A.
last_name: Tononi
- first_name: Alberto
full_name: Cappellaro, Alberto
id: 9d13b3cb-30a2-11eb-80dc-f772505e8660
last_name: Cappellaro
orcid: 0000-0001-6110-2359
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: L.
full_name: Salasnich, L.
last_name: Salasnich
citation:
ama: Tononi A, Cappellaro A, Bighin G, Salasnich L. Propagation of first and second
sound in a two-dimensional Fermi superfluid. Physical Review A. 2021;103(6).
doi:10.1103/PhysRevA.103.L061303
apa: Tononi, A., Cappellaro, A., Bighin, G., & Salasnich, L. (2021). Propagation
of first and second sound in a two-dimensional Fermi superfluid. Physical Review
A. American Physical Society. https://doi.org/10.1103/PhysRevA.103.L061303
chicago: Tononi, A., Alberto Cappellaro, Giacomo Bighin, and L. Salasnich. “Propagation
of First and Second Sound in a Two-Dimensional Fermi Superfluid.” Physical
Review A. American Physical Society, 2021. https://doi.org/10.1103/PhysRevA.103.L061303.
ieee: A. Tononi, A. Cappellaro, G. Bighin, and L. Salasnich, “Propagation of first
and second sound in a two-dimensional Fermi superfluid,” Physical Review A,
vol. 103, no. 6. American Physical Society, 2021.
ista: Tononi A, Cappellaro A, Bighin G, Salasnich L. 2021. Propagation of first
and second sound in a two-dimensional Fermi superfluid. Physical Review A. 103(6),
L061303.
mla: Tononi, A., et al. “Propagation of First and Second Sound in a Two-Dimensional
Fermi Superfluid.” Physical Review A, vol. 103, no. 6, L061303, American
Physical Society, 2021, doi:10.1103/PhysRevA.103.L061303.
short: A. Tononi, A. Cappellaro, G. Bighin, L. Salasnich, Physical Review A 103
(2021).
date_created: 2021-06-27T22:01:49Z
date_published: 2021-06-01T00:00:00Z
date_updated: 2023-08-10T13:37:25Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.103.L061303
external_id:
arxiv:
- '2009.06491'
isi:
- '000662296700014'
intvolume: ' 103'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2009.06491
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review A
publication_identifier:
eissn:
- '24699934'
issn:
- '24699926'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Propagation of first and second sound in a two-dimensional Fermi superfluid
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 103
year: '2021'
...
---
_id: '9679'
abstract:
- lang: eng
text: The relative motion of three impenetrable particles on a ring, in our case
two identical fermions and one impurity, is isomorphic to a triangular quantum
billiard. Depending on the ratio κ of the impurity and fermion masses, the billiards
can be integrable or non-integrable (also referred to in the main text as chaotic).
To set the stage, we first investigate the energy level distributions of the billiards
as a function of 1/κ ∈ [0, 1] and find no evidence of integrable cases beyond
the limiting values 1/κ = 1 and 1/κ = 0. Then, we use machine learning tools to
analyze properties of probability distributions of individual quantum states.
We find that convolutional neural networks can correctly classify integrable and
non-integrable states. The decisive features of the wave functions are the normalization
and a large number of zero elements, corresponding to the existence of a nodal
line. The network achieves typical accuracies of 97%, suggesting that machine
learning tools can be used to analyze and classify the morphology of probability
densities obtained in theory or experiment.
acknowledgement: We thank Aidan Tracy for his input during the initial stages of this
project. We thank Nathan Harshman, Achim Richter, Wojciech Rzadkowski, and Dane
Hudson Smith for helpful discussions and comments on the manuscript. This work has
been supported by European Union's Horizon 2020 research and innovation program
under the Marie Skłodowska-Curie Grant Agreement No. 754411 (AGV); by the German
Aeronautics and Space Administration (DLR) through Grant No. 50 WM 1957 (OVM); by
the Deutsche Forschungsgemeinschaft through Project VO 2437/1-1 (Project No. 413495248)
(AGV and HWH); by the Deutsche Forschungsgemeinschaft through Collaborative Research
Center SFB 1245 (Project No. 279384907) and by the Bundesministerium für Bildung
und Forschung under Contract 05P18RDFN1 (HWH). HWH also thanks the ECT* for hospitality
during the workshop 'Universal physics in Many-Body Quantum Systems—From Atoms to
Quarks'. This infrastructure is part of a project that has received funding from
the European Union's Horizon 2020 research and innovation program under Grant Agreement
No. 824093. We acknowledge support by the Deutsche Forschungsgemeinschaft and the
Open Access Publishing Fund of Technische Universität Darmstadt.
article_number: '065009'
article_processing_charge: Yes
article_type: original
author:
- first_name: David
full_name: Huber, David
last_name: Huber
- first_name: Oleksandr V.
full_name: Marchukov, Oleksandr V.
last_name: Marchukov
- first_name: Hans Werner
full_name: Hammer, Hans Werner
last_name: Hammer
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Huber D, Marchukov OV, Hammer HW, Volosniev A. Morphology of three-body quantum
states from machine learning. New Journal of Physics. 2021;23(6). doi:10.1088/1367-2630/ac0576
apa: Huber, D., Marchukov, O. V., Hammer, H. W., & Volosniev, A. (2021). Morphology
of three-body quantum states from machine learning. New Journal of Physics.
IOP Publishing. https://doi.org/10.1088/1367-2630/ac0576
chicago: Huber, David, Oleksandr V. Marchukov, Hans Werner Hammer, and Artem Volosniev.
“Morphology of Three-Body Quantum States from Machine Learning.” New Journal
of Physics. IOP Publishing, 2021. https://doi.org/10.1088/1367-2630/ac0576.
ieee: D. Huber, O. V. Marchukov, H. W. Hammer, and A. Volosniev, “Morphology of
three-body quantum states from machine learning,” New Journal of Physics,
vol. 23, no. 6. IOP Publishing, 2021.
ista: Huber D, Marchukov OV, Hammer HW, Volosniev A. 2021. Morphology of three-body
quantum states from machine learning. New Journal of Physics. 23(6), 065009.
mla: Huber, David, et al. “Morphology of Three-Body Quantum States from Machine
Learning.” New Journal of Physics, vol. 23, no. 6, 065009, IOP Publishing,
2021, doi:10.1088/1367-2630/ac0576.
short: D. Huber, O.V. Marchukov, H.W. Hammer, A. Volosniev, New Journal of Physics
23 (2021).
date_created: 2021-07-18T22:01:22Z
date_published: 2021-06-23T00:00:00Z
date_updated: 2023-08-10T13:58:09Z
day: '23'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1367-2630/ac0576
ec_funded: 1
external_id:
arxiv:
- '2102.04961'
isi:
- '000664736300001'
file:
- access_level: open_access
checksum: e39164ce7ea228d287cf8924e1a0f9fe
content_type: application/pdf
creator: cziletti
date_created: 2021-07-19T11:47:16Z
date_updated: 2021-07-19T11:47:16Z
file_id: '9690'
file_name: 2021_NewJPhys_Huber.pdf
file_size: 3868445
relation: main_file
success: 1
file_date_updated: 2021-07-19T11:47:16Z
has_accepted_license: '1'
intvolume: ' 23'
isi: 1
issue: '6'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: New Journal of Physics
publication_identifier:
eissn:
- '13672630'
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Morphology of three-body quantum states from machine learning
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 23
year: '2021'
...
---
_id: '9770'
abstract:
- lang: eng
text: We study an effective one-dimensional quantum model that includes friction
and spin-orbit coupling (SOC), and show that the model exhibits spin polarization
when both terms are finite. Most important, strong spin polarization can be observed
even for moderate SOC, provided that the friction is strong. Our findings might
help to explain the pronounced effect of chirality on spin distribution and transport
in chiral molecules. In particular, our model implies static magnetic properties
of a chiral molecule, which lead to Shiba-like states when a molecule is placed
on a superconductor, in accordance with recent experimental data.
acknowledgement: "We thank Rafael Barfknecht for useful discussions. This work has
received funding from the European Union’s Horizon 2020 research and innovation
programme under the Marie Skłodowska-Curie Grant Agreement No. 754411 (A.G.\r\nand
A.G.V.). M.L. acknowledges support by the European Research Council (ERC) Starting
Grant No. 801770 (ANGULON). Y.P. and O.M. acknowledge funding from the Nidersachsen
Ministry of Science and Culture, and from the\r\nAcademia Sinica Research Program.
O.M. is thankful for support through the Harry de Jur Chair in Applied Science."
article_number: '024430'
article_processing_charge: No
article_type: original
author:
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Hen
full_name: Alpern, Hen
last_name: Alpern
- first_name: Yossi
full_name: Paltiel, Yossi
last_name: Paltiel
- first_name: Oded
full_name: Millo, Oded
last_name: Millo
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
citation:
ama: Volosniev A, Alpern H, Paltiel Y, Millo O, Lemeshko M, Ghazaryan A. Interplay
between friction and spin-orbit coupling as a source of spin polarization. Physical
Review B. 2021;104(2). doi:10.1103/physrevb.104.024430
apa: Volosniev, A., Alpern, H., Paltiel, Y., Millo, O., Lemeshko, M., & Ghazaryan,
A. (2021). Interplay between friction and spin-orbit coupling as a source of spin
polarization. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.104.024430
chicago: Volosniev, Artem, Hen Alpern, Yossi Paltiel, Oded Millo, Mikhail Lemeshko,
and Areg Ghazaryan. “Interplay between Friction and Spin-Orbit Coupling as a Source
of Spin Polarization.” Physical Review B. American Physical Society, 2021.
https://doi.org/10.1103/physrevb.104.024430.
ieee: A. Volosniev, H. Alpern, Y. Paltiel, O. Millo, M. Lemeshko, and A. Ghazaryan,
“Interplay between friction and spin-orbit coupling as a source of spin polarization,”
Physical Review B, vol. 104, no. 2. American Physical Society, 2021.
ista: Volosniev A, Alpern H, Paltiel Y, Millo O, Lemeshko M, Ghazaryan A. 2021.
Interplay between friction and spin-orbit coupling as a source of spin polarization.
Physical Review B. 104(2), 024430.
mla: Volosniev, Artem, et al. “Interplay between Friction and Spin-Orbit Coupling
as a Source of Spin Polarization.” Physical Review B, vol. 104, no. 2,
024430, American Physical Society, 2021, doi:10.1103/physrevb.104.024430.
short: A. Volosniev, H. Alpern, Y. Paltiel, O. Millo, M. Lemeshko, A. Ghazaryan,
Physical Review B 104 (2021).
date_created: 2021-08-04T15:05:32Z
date_published: 2021-07-01T00:00:00Z
date_updated: 2023-08-10T14:27:07Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/physrevb.104.024430
ec_funded: 1
external_id:
arxiv:
- '2101.05173'
isi:
- '000678780800003'
intvolume: ' 104'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2101.05173
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Interplay between friction and spin-orbit coupling as a source of spin polarization
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 104
year: '2021'
...
---
_id: '9769'
abstract:
- lang: eng
text: A few years ago, flow equations were introduced as a technique for calculating
the ground-state energies of cold Bose gases with and without impurities. In this
paper, we extend this approach to compute observables other than the energy. As
an example, we calculate the densities, and phase fluctuations of one-dimensional
Bose gases with one and two impurities. For a single mobile impurity, we use flow
equations to validate the mean-field results obtained upon the Lee-Low-Pines transformation.
We show that the mean-field approximation is accurate for all values of the boson-impurity
interaction strength as long as the phase coherence length is much larger than
the healing length of the condensate. For two static impurities, we calculate
impurity-impurity interactions induced by the Bose gas. We find that leading order
perturbation theory fails when boson-impurity interactions are stronger than boson-boson
interactions. The mean-field approximation reproduces the flow equation results
for all values of the boson-impurity interaction strength as long as boson-boson
interactions are weak.
acknowledgement: We thank Matthias Heinz and Volker Karle for helpful comments on
the manuscript; Zoran Ristivojevic for useful correspondence regarding mean-field
calculations of induced impurity-impurity interactions; Fabian Grusdt for sharing
with us the data for the densities presented in Ref. [14]. This work has received
funding from the DFG Project No. 413495248 [VO 2437/1-1] (F. B., H.-W. H., A. G.
V.) and European Union’s Horizon 2020 research and innovation programme under the
Marie Skłodowska-Curie Grant Agreement No. 754411 (A. G. V.). M. L. acknowledges
support by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON).
H.-W.H. thanks the ECT* for hospitality during the workshop “Universal physics in
Many-Body Quantum Systems – From Atoms to Quarks". This infrastructure is part of
a project that has received funding from the European Union’s Horizon 2020 research
and innovation programme under grant agreement No 824093. H.-W.H. was supported
by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID
279384907 - SFB 1245.
article_number: '008'
article_processing_charge: Yes
article_type: original
author:
- first_name: Fabian
full_name: Brauneis, Fabian
last_name: Brauneis
- first_name: Hans-Werner
full_name: Hammer, Hans-Werner
last_name: Hammer
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: 'Brauneis F, Hammer H-W, Lemeshko M, Volosniev A. Impurities in a one-dimensional
Bose gas: The flow equation approach. SciPost Physics. 2021;11(1). doi:10.21468/scipostphys.11.1.008'
apa: 'Brauneis, F., Hammer, H.-W., Lemeshko, M., & Volosniev, A. (2021). Impurities
in a one-dimensional Bose gas: The flow equation approach. SciPost Physics.
SciPost. https://doi.org/10.21468/scipostphys.11.1.008'
chicago: 'Brauneis, Fabian, Hans-Werner Hammer, Mikhail Lemeshko, and Artem Volosniev.
“Impurities in a One-Dimensional Bose Gas: The Flow Equation Approach.” SciPost
Physics. SciPost, 2021. https://doi.org/10.21468/scipostphys.11.1.008.'
ieee: 'F. Brauneis, H.-W. Hammer, M. Lemeshko, and A. Volosniev, “Impurities in
a one-dimensional Bose gas: The flow equation approach,” SciPost Physics,
vol. 11, no. 1. SciPost, 2021.'
ista: 'Brauneis F, Hammer H-W, Lemeshko M, Volosniev A. 2021. Impurities in a one-dimensional
Bose gas: The flow equation approach. SciPost Physics. 11(1), 008.'
mla: 'Brauneis, Fabian, et al. “Impurities in a One-Dimensional Bose Gas: The Flow
Equation Approach.” SciPost Physics, vol. 11, no. 1, 008, SciPost, 2021,
doi:10.21468/scipostphys.11.1.008.'
short: F. Brauneis, H.-W. Hammer, M. Lemeshko, A. Volosniev, SciPost Physics 11
(2021).
date_created: 2021-08-04T15:00:55Z
date_published: 2021-07-13T00:00:00Z
date_updated: 2023-08-11T10:25:44Z
day: '13'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.21468/scipostphys.11.1.008
ec_funded: 1
external_id:
arxiv:
- '2101.10958'
isi:
- '000680039500013'
file:
- access_level: open_access
checksum: eaa847346b1a023d97bbb291779610ed
content_type: application/pdf
creator: asandaue
date_created: 2021-08-10T11:44:59Z
date_updated: 2021-08-10T11:44:59Z
file_id: '9875'
file_name: 2021_SciPostPhysics_Brauneis.pdf
file_size: 1085300
relation: main_file
success: 1
file_date_updated: 2021-08-10T11:44:59Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
issue: '1'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: SciPost Physics
publication_identifier:
eissn:
- 2542-4653
publication_status: published
publisher: SciPost
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Impurities in a one-dimensional Bose gas: The flow equation approach'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 11
year: '2021'
...
---
_id: '9903'
abstract:
- lang: eng
text: Eigenstate thermalization in quantum many-body systems implies that eigenstates
at high energy are similar to random vectors. Identifying systems where at least
some eigenstates are nonthermal is an outstanding question. In this Letter we
show that interacting quantum models that have a nullspace—a degenerate subspace
of eigenstates at zero energy (zero modes), which corresponds to infinite temperature,
provide a route to nonthermal eigenstates. We analytically show the existence
of a zero mode which can be represented as a matrix product state for a certain
class of local Hamiltonians. In the more general case we use a subspace disentangling
algorithm to generate an orthogonal basis of zero modes characterized by increasing
entanglement entropy. We show evidence for an area-law entanglement scaling of
the least-entangled zero mode in the broad parameter regime, leading to a conjecture
that all local Hamiltonians with the nullspace feature zero modes with area-law
entanglement scaling and, as such, break the strong thermalization hypothesis.
Finally, we find zero modes in constrained models and propose a setup for observing
their experimental signatures.
acknowledgement: "We acknowledge useful discussions with V. Gritsev and A. Garkun
and suggestions on implementation of the\r\nPPXPP model by D. Bluvstein. A. M. and
M. S. were supported by the European Research Council (ERC) under\r\nthe European
Union’s Horizon 2020 research and innovation program (Grant Agreement No. 850899)"
article_number: '060602'
article_processing_charge: Yes (in subscription journal)
article_type: letter_note
author:
- first_name: Volker
full_name: Karle, Volker
id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425
last_name: Karle
orcid: 0000-0002-6963-0129
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Alexios
full_name: Michailidis, Alexios
id: 36EBAD38-F248-11E8-B48F-1D18A9856A87
last_name: Michailidis
orcid: 0000-0002-8443-1064
citation:
ama: Karle V, Serbyn M, Michailidis A. Area-law entangled eigenstates from nullspaces
of local Hamiltonians. Physical Review Letters. 2021;127(6). doi:10.1103/physrevlett.127.060602
apa: Karle, V., Serbyn, M., & Michailidis, A. (2021). Area-law entangled eigenstates
from nullspaces of local Hamiltonians. Physical Review Letters. American
Physical Society. https://doi.org/10.1103/physrevlett.127.060602
chicago: Karle, Volker, Maksym Serbyn, and Alexios Michailidis. “Area-Law Entangled
Eigenstates from Nullspaces of Local Hamiltonians.” Physical Review Letters.
American Physical Society, 2021. https://doi.org/10.1103/physrevlett.127.060602.
ieee: V. Karle, M. Serbyn, and A. Michailidis, “Area-law entangled eigenstates from
nullspaces of local Hamiltonians,” Physical Review Letters, vol. 127, no.
6. American Physical Society, 2021.
ista: Karle V, Serbyn M, Michailidis A. 2021. Area-law entangled eigenstates from
nullspaces of local Hamiltonians. Physical Review Letters. 127(6), 060602.
mla: Karle, Volker, et al. “Area-Law Entangled Eigenstates from Nullspaces of Local
Hamiltonians.” Physical Review Letters, vol. 127, no. 6, 060602, American
Physical Society, 2021, doi:10.1103/physrevlett.127.060602.
short: V. Karle, M. Serbyn, A. Michailidis, Physical Review Letters 127 (2021).
date_created: 2021-08-13T09:27:39Z
date_published: 2021-08-06T00:00:00Z
date_updated: 2023-08-11T10:43:27Z
day: '06'
ddc:
- '539'
department:
- _id: MaSe
- _id: GradSch
- _id: MiLe
doi: 10.1103/physrevlett.127.060602
ec_funded: 1
external_id:
arxiv:
- '2102.13633'
isi:
- '000684276000002'
file:
- access_level: open_access
checksum: 51218f302dcef99d90d1209809fcc874
content_type: application/pdf
creator: mserbyn
date_created: 2021-08-13T09:28:08Z
date_updated: 2021-08-13T09:28:08Z
file_id: '9904'
file_name: PhysRevLett.127.060602_SOM.pdf
file_size: 5064231
relation: main_file
success: 1
file_date_updated: 2021-08-13T09:28:08Z
has_accepted_license: '1'
intvolume: ' 127'
isi: 1
issue: '6'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 23841C26-32DE-11EA-91FC-C7463DDC885E
call_identifier: H2020
grant_number: '850899'
name: 'Non-Ergodic Quantum Matter: Universality, Dynamics and Control'
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Area-law entangled eigenstates from nullspaces of local Hamiltonians
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 127
year: '2021'
...
---
_id: '10025'
abstract:
- lang: eng
text: Ferromagnetism is most common in transition metal compounds but may also arise
in low-density two-dimensional electron systems, with signatures observed in silicon,
III-V semiconductor systems, and graphene moiré heterostructures. Here we show
that gate-tuned van Hove singularities in rhombohedral trilayer graphene drive
the spontaneous ferromagnetic polarization of the electron system into one or
more spin- and valley flavors. Using capacitance measurements on graphite-gated
van der Waals heterostructures, we find a cascade of density- and electronic displacement
field tuned phase transitions marked by negative electronic compressibility. The
transitions define the boundaries between phases where quantum oscillations have
either four-fold, two-fold, or one-fold degeneracy, associated with a spin and
valley degenerate normal metal, spin-polarized `half-metal', and spin and valley
polarized `quarter metal', respectively. For electron doping, the salient features
are well captured by a phenomenological Stoner model with a valley-anisotropic
Hund's coupling, likely arising from interactions at the lattice scale. For hole
filling, we observe a richer phase diagram featuring a delicate interplay of broken
symmetries and transitions in the Fermi surface topology. Finally, by rotational
alignment of a hexagonal boron nitride substrate to induce a moiré superlattice,
we find that the superlattice perturbs the preexisting isospin order only weakly,
leaving the basic phase diagram intact while catalyzing the formation of topologically
nontrivial gapped states whenever itinerant half- or quarter metal states occur
at half- or quarter superlattice band filling. Our results show that rhombohedral
trilayer graphene is an ideal platform for well-controlled tests of many-body
theory and reveal magnetism in moiré materials to be fundamentally itinerant in
nature.
acknowledgement: "The authors acknowledge discussions with A. Macdonald, L. Fu, F.
Wang and M. Zaletel. AFY acknowledges support of the National Science Foundation
under DMR1654186, and the Gordon and Betty Moore Foundation under award GBMF9471.
The authors acknowledge the use of the research facilities within the California
NanoSystems Institute, supported by the University of California, Santa Barbara
and the University of California, Office of the President.\r\nK.W. and T.T. acknowledge
support from the Elemental Strategy Initiative conducted by the MEXT, Japan, Grant
Number JPMXP0112101001 and JSPS KAKENHI, Grant Number JP20H00354. EB and TH were
supported by the European Research Council (ERC) under grant HQMAT (Grant Agreement
No. 817799). A.G. acknowledges support by the European Unions Horizon 2020 research
and innovation program under the Marie Sklodowska-Curie Grant Agreement\r\nNo. 754411.\r\n"
article_processing_charge: No
article_type: original
author:
- first_name: Haoxin
full_name: Zhou, Haoxin
last_name: Zhou
- first_name: Tian
full_name: Xie, Tian
last_name: Xie
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Tobias
full_name: Holder, Tobias
last_name: Holder
- first_name: James R.
full_name: Ehrets, James R.
last_name: Ehrets
- first_name: Eric M.
full_name: Spanton, Eric M.
last_name: Spanton
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Erez
full_name: Berg, Erez
last_name: Berg
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Andrea F.
full_name: Young, Andrea F.
last_name: Young
citation:
ama: Zhou H, Xie T, Ghazaryan A, et al. Half and quarter metals in rhombohedral
trilayer graphene. Nature. 2021. doi:10.1038/s41586-021-03938-w
apa: Zhou, H., Xie, T., Ghazaryan, A., Holder, T., Ehrets, J. R., Spanton, E. M.,
… Young, A. F. (2021). Half and quarter metals in rhombohedral trilayer graphene.
Nature. Springer Nature. https://doi.org/10.1038/s41586-021-03938-w
chicago: Zhou, Haoxin, Tian Xie, Areg Ghazaryan, Tobias Holder, James R. Ehrets,
Eric M. Spanton, Takashi Taniguchi, et al. “Half and Quarter Metals in Rhombohedral
Trilayer Graphene.” Nature. Springer Nature, 2021. https://doi.org/10.1038/s41586-021-03938-w.
ieee: H. Zhou et al., “Half and quarter metals in rhombohedral trilayer graphene,”
Nature. Springer Nature, 2021.
ista: Zhou H, Xie T, Ghazaryan A, Holder T, Ehrets JR, Spanton EM, Taniguchi T,
Watanabe K, Berg E, Serbyn M, Young AF. 2021. Half and quarter metals in rhombohedral
trilayer graphene. Nature.
mla: Zhou, Haoxin, et al. “Half and Quarter Metals in Rhombohedral Trilayer Graphene.”
Nature, Springer Nature, 2021, doi:10.1038/s41586-021-03938-w.
short: H. Zhou, T. Xie, A. Ghazaryan, T. Holder, J.R. Ehrets, E.M. Spanton, T. Taniguchi,
K. Watanabe, E. Berg, M. Serbyn, A.F. Young, Nature (2021).
date_created: 2021-09-19T22:01:25Z
date_published: 2021-09-01T00:00:00Z
date_updated: 2023-08-14T07:04:06Z
day: '01'
department:
- _id: MaSe
- _id: MiLe
doi: 10.1038/s41586-021-03938-w
ec_funded: 1
external_id:
arxiv:
- '2104.00653'
isi:
- '000706977400002'
isi: 1
keyword:
- condensed matter - mesoscale and nanoscale physics
- condensed matter - strongly correlated electrons
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2104.00653
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41586-021-04181-z
scopus_import: '1'
status: public
title: Half and quarter metals in rhombohedral trilayer graphene
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
year: '2021'
...
---
_id: '10176'
abstract:
- lang: eng
text: "We give a combinatorial model for r-spin surfaces with parameterized boundary
based on Novak (“Lattice topological field theories in two dimensions,” Ph.D.
thesis, Universität Hamburg, 2015). The r-spin structure is encoded in terms of
ℤ\U0001D45F-valued indices assigned to the edges of a polygonal decomposition.
This combinatorial model is designed for our state-sum construction of two-dimensional
topological field theories on r-spin surfaces. We show that an example of such
a topological field theory computes the Arf-invariant of an r-spin surface as
introduced by Randal-Williams [J. Topol. 7, 155 (2014)] and Geiges et al. [Osaka
J. Math. 49, 449 (2012)]. This implies, in particular, that the r-spin Arf-invariant
is constant on orbits of the mapping class group, providing an alternative proof
of that fact."
acknowledgement: We would like to thank Nils Carqueville, Tobias Dyckerhoff, Jan Hesse,
Ehud Meir, Sebastian Novak, Louis-Hadrien Robert, Nick Salter, Walker Stern, and
Lukas Woike for helpful discussions and comments. L.S. was supported by the DFG
Research Training Group 1670 “Mathematics Inspired by String Theory and Quantum
Field Theory.”
article_number: '102302'
article_processing_charge: No
article_type: original
author:
- first_name: Ingo
full_name: Runkel, Ingo
last_name: Runkel
- first_name: Lorant
full_name: Szegedy, Lorant
id: 7943226E-220E-11EA-94C7-D59F3DDC885E
last_name: Szegedy
orcid: 0000-0003-2834-5054
citation:
ama: Runkel I, Szegedy L. Topological field theory on r-spin surfaces and the Arf-invariant.
Journal of Mathematical Physics. 2021;62(10). doi:10.1063/5.0037826
apa: Runkel, I., & Szegedy, L. (2021). Topological field theory on r-spin surfaces
and the Arf-invariant. Journal of Mathematical Physics. AIP Publishing.
https://doi.org/10.1063/5.0037826
chicago: Runkel, Ingo, and Lorant Szegedy. “Topological Field Theory on R-Spin Surfaces
and the Arf-Invariant.” Journal of Mathematical Physics. AIP Publishing,
2021. https://doi.org/10.1063/5.0037826.
ieee: I. Runkel and L. Szegedy, “Topological field theory on r-spin surfaces and
the Arf-invariant,” Journal of Mathematical Physics, vol. 62, no. 10. AIP
Publishing, 2021.
ista: Runkel I, Szegedy L. 2021. Topological field theory on r-spin surfaces and
the Arf-invariant. Journal of Mathematical Physics. 62(10), 102302.
mla: Runkel, Ingo, and Lorant Szegedy. “Topological Field Theory on R-Spin Surfaces
and the Arf-Invariant.” Journal of Mathematical Physics, vol. 62, no. 10,
102302, AIP Publishing, 2021, doi:10.1063/5.0037826.
short: I. Runkel, L. Szegedy, Journal of Mathematical Physics 62 (2021).
date_created: 2021-10-24T22:01:32Z
date_published: 2021-10-01T00:00:00Z
date_updated: 2023-08-14T08:04:12Z
day: '01'
department:
- _id: MiLe
doi: 10.1063/5.0037826
external_id:
arxiv:
- '1802.09978'
isi:
- '000755638500010'
intvolume: ' 62'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1802.09978
month: '10'
oa: 1
oa_version: Preprint
publication: Journal of Mathematical Physics
publication_identifier:
issn:
- '00222488'
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Topological field theory on r-spin surfaces and the Arf-invariant
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 62
year: '2021'
...
---
_id: '10401'
abstract:
- lang: eng
text: Theoretical and experimental studies of the interaction between spins and
temperature are vital for the development of spin caloritronics, as they dictate
the design of future devices. In this work, we propose a two-terminal cold-atom
simulator to study that interaction. The proposed quantum simulator consists of
strongly interacting atoms that occupy two temperature reservoirs connected by
a one-dimensional link. First, we argue that the dynamics in the link can be described
using an inhomogeneous Heisenberg spin chain whose couplings are defined by the
local temperature. Second, we show the existence of a spin current in a system
with a temperature difference by studying the dynamics that follows the spin-flip
of an atom in the link. A temperature gradient accelerates the impurity in one
direction more than in the other, leading to an overall spin current similar to
the spin Seebeck effect.
acknowledgement: The authors acknowledge support from the European QuantERA ERA-NET
Cofund in Quantum Technologies (Project QTFLAG Grant Agreement No. 731473) (R.E.B),
CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) Brazil (A.F.),
the European Union’s Horizon 2020 research and innovation programme under the Marie
Skłodowska-Curie Grant Agreement No. 754411 (A.G.V.), the Independent Research Fund
Denmark, the Carlsberg Foundation, and Aarhus University Research Foundation under
the Jens Christian Skou fellowship program (N.T.Z).
article_number: '252'
article_processing_charge: No
article_type: original
author:
- first_name: Rafael E.
full_name: Barfknecht, Rafael E.
last_name: Barfknecht
- first_name: Angela
full_name: Foerster, Angela
last_name: Foerster
- first_name: Nikolaj T.
full_name: Zinner, Nikolaj T.
last_name: Zinner
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Barfknecht RE, Foerster A, Zinner NT, Volosniev A. Generation of spin currents
by a temperature gradient in a two-terminal device. Communications Physics.
2021;4(1). doi:10.1038/s42005-021-00753-7
apa: Barfknecht, R. E., Foerster, A., Zinner, N. T., & Volosniev, A. (2021).
Generation of spin currents by a temperature gradient in a two-terminal device.
Communications Physics. Springer Nature. https://doi.org/10.1038/s42005-021-00753-7
chicago: Barfknecht, Rafael E., Angela Foerster, Nikolaj T. Zinner, and Artem Volosniev.
“Generation of Spin Currents by a Temperature Gradient in a Two-Terminal Device.”
Communications Physics. Springer Nature, 2021. https://doi.org/10.1038/s42005-021-00753-7.
ieee: R. E. Barfknecht, A. Foerster, N. T. Zinner, and A. Volosniev, “Generation
of spin currents by a temperature gradient in a two-terminal device,” Communications
Physics, vol. 4, no. 1. Springer Nature, 2021.
ista: Barfknecht RE, Foerster A, Zinner NT, Volosniev A. 2021. Generation of spin
currents by a temperature gradient in a two-terminal device. Communications Physics.
4(1), 252.
mla: Barfknecht, Rafael E., et al. “Generation of Spin Currents by a Temperature
Gradient in a Two-Terminal Device.” Communications Physics, vol. 4, no.
1, 252, Springer Nature, 2021, doi:10.1038/s42005-021-00753-7.
short: R.E. Barfknecht, A. Foerster, N.T. Zinner, A. Volosniev, Communications Physics
4 (2021).
date_created: 2021-12-05T23:01:39Z
date_published: 2021-11-26T00:00:00Z
date_updated: 2023-08-14T13:04:34Z
day: '26'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1038/s42005-021-00753-7
ec_funded: 1
external_id:
arxiv:
- '2101.02020'
isi:
- 10.1038/s42005-021-00753-7
file:
- access_level: open_access
checksum: 9097319952cb9a3d96e7fd3aa9813a03
content_type: application/pdf
creator: alisjak
date_created: 2021-12-06T14:53:41Z
date_updated: 2021-12-06T14:53:41Z
file_id: '10420'
file_name: 2021_NatComm_Barfknecht.pdf
file_size: 1068984
relation: main_file
success: 1
file_date_updated: 2021-12-06T14:53:41Z
has_accepted_license: '1'
intvolume: ' 4'
issue: '1'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Communications Physics
publication_identifier:
eissn:
- '23993650'
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Generation of spin currents by a temperature gradient in a two-terminal device
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 4
year: '2021'
...
---
_id: '10628'
abstract:
- lang: eng
text: The surface states of 3D topological insulators in general have negligible
quantum oscillations (QOs) when the chemical potential is tuned to the Dirac points.
In contrast, we find that topological Kondo insulators (TKIs) can support surface
states with an arbitrarily large Fermi surface (FS) when the chemical potential
is pinned to the Dirac point. We illustrate that these FSs give rise to finite-frequency
QOs, which can become comparable to the extremal area of the unhybridized bulk
bands. We show that this occurs when the crystal symmetry is lowered from cubic
to tetragonal in a minimal two-orbital model. We label such surface modes as 'shadow
surface states'. Moreover, we show that the sufficient next-nearest neighbor out-of-plane
hybridization leading to shadow surface states can be self-consistently stabilized
for tetragonal TKIs. Consequently, shadow surface states provide an important
example of high-frequency QOs beyond the context of cubic TKIs.
acknowledgement: PG acknowledges support from National Science Foundation Awards No.
DMR-1824265 for this work. AG acknowledges support from the European Union's Horizon
2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement
No. 754411. EMN is supported by ASU startup grant. OE is in part supported by NSF-DMR-1904716.
article_number: '123042'
article_processing_charge: No
article_type: original
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Emilian M.
full_name: Nica, Emilian M.
last_name: Nica
- first_name: Onur
full_name: Erten, Onur
last_name: Erten
- first_name: Pouyan
full_name: Ghaemi, Pouyan
last_name: Ghaemi
citation:
ama: Ghazaryan A, Nica EM, Erten O, Ghaemi P. Shadow surface states in topological
Kondo insulators. New Journal of Physics. 2021;23(12). doi:10.1088/1367-2630/ac4124
apa: Ghazaryan, A., Nica, E. M., Erten, O., & Ghaemi, P. (2021). Shadow surface
states in topological Kondo insulators. New Journal of Physics. IOP Publishing.
https://doi.org/10.1088/1367-2630/ac4124
chicago: Ghazaryan, Areg, Emilian M. Nica, Onur Erten, and Pouyan Ghaemi. “Shadow
Surface States in Topological Kondo Insulators.” New Journal of Physics.
IOP Publishing, 2021. https://doi.org/10.1088/1367-2630/ac4124.
ieee: A. Ghazaryan, E. M. Nica, O. Erten, and P. Ghaemi, “Shadow surface states
in topological Kondo insulators,” New Journal of Physics, vol. 23, no.
12. IOP Publishing, 2021.
ista: Ghazaryan A, Nica EM, Erten O, Ghaemi P. 2021. Shadow surface states in topological
Kondo insulators. New Journal of Physics. 23(12), 123042.
mla: Ghazaryan, Areg, et al. “Shadow Surface States in Topological Kondo Insulators.”
New Journal of Physics, vol. 23, no. 12, 123042, IOP Publishing, 2021,
doi:10.1088/1367-2630/ac4124.
short: A. Ghazaryan, E.M. Nica, O. Erten, P. Ghaemi, New Journal of Physics 23 (2021).
date_created: 2022-01-16T23:01:28Z
date_published: 2021-12-23T00:00:00Z
date_updated: 2023-08-17T06:54:54Z
day: '23'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1367-2630/ac4124
ec_funded: 1
external_id:
arxiv:
- '2012.11625'
isi:
- '000734063700001'
file:
- access_level: open_access
checksum: 0c3cb6816242fa8afd1cc87a5fe77821
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-17T10:01:58Z
date_updated: 2022-01-17T10:01:58Z
file_id: '10632'
file_name: 2021_NewJourPhys_Ghazaryan.pdf
file_size: 2533102
relation: main_file
success: 1
file_date_updated: 2022-01-17T10:01:58Z
has_accepted_license: '1'
intvolume: ' 23'
isi: 1
issue: '12'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: New Journal of Physics
publication_identifier:
issn:
- 1367-2630
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Shadow surface states in topological Kondo insulators
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 23
year: '2021'
...
---
_id: '10631'
abstract:
- lang: eng
text: We combine experimental and theoretical approaches to explore excited rotational
states of molecules embedded in helium nanodroplets using CS2 and I2 as examples.
Laser-induced nonadiabatic molecular alignment is employed to measure spectral
lines for rotational states extending beyond those initially populated at the
0.37 K droplet temperature. We construct a simple quantum-mechanical model, based
on a linear rotor coupled to a single-mode bosonic bath, to determine the rotational
energy structure in its entirety. The calculated and measured spectral lines are
in good agreement. We show that the effect of the surrounding superfluid on molecular
rotation can be rationalized by a single quantity, the angular momentum, transferred
from the molecule to the droplet.
acknowledgement: I.C. acknowledges the support by the European Union’s Horizon 2020
research and innovation programme under the Marie Sklodowska-Curie Grant Agreement
No. 665385. G.B. acknowledges support from the Austrian Science Fund (FWF), under
project No. M2461-N27. M.L. acknowledges support by the Austrian Science Fund (FWF),
under project No. P29902-N27, and by the European Research Council (ERC) Starting
Grant No. 801770 (ANGULON). H.S acknowledges support from the European Research
Council-AdG (Project No. 320459, DropletControl) and from The Villum Foundation
through a Villum Investigator grant no. 25886.
article_number: L061303
article_processing_charge: No
article_type: original
author:
- first_name: Igor
full_name: Cherepanov, Igor
id: 339C7E5A-F248-11E8-B48F-1D18A9856A87
last_name: Cherepanov
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Constant A.
full_name: Schouder, Constant A.
last_name: Schouder
- first_name: Adam S.
full_name: Chatterley, Adam S.
last_name: Chatterley
- first_name: Simon H.
full_name: Albrechtsen, Simon H.
last_name: Albrechtsen
- first_name: Alberto Viñas
full_name: Muñoz, Alberto Viñas
last_name: Muñoz
- first_name: Lars
full_name: Christiansen, Lars
last_name: Christiansen
- first_name: Henrik
full_name: Stapelfeldt, Henrik
last_name: Stapelfeldt
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Cherepanov I, Bighin G, Schouder CA, et al. Excited rotational states of molecules
in a superfluid. Physical Review A. 2021;104(6). doi:10.1103/PhysRevA.104.L061303
apa: Cherepanov, I., Bighin, G., Schouder, C. A., Chatterley, A. S., Albrechtsen,
S. H., Muñoz, A. V., … Lemeshko, M. (2021). Excited rotational states of molecules
in a superfluid. Physical Review A. American Physical Society. https://doi.org/10.1103/PhysRevA.104.L061303
chicago: Cherepanov, Igor, Giacomo Bighin, Constant A. Schouder, Adam S. Chatterley,
Simon H. Albrechtsen, Alberto Viñas Muñoz, Lars Christiansen, Henrik Stapelfeldt,
and Mikhail Lemeshko. “Excited Rotational States of Molecules in a Superfluid.”
Physical Review A. American Physical Society, 2021. https://doi.org/10.1103/PhysRevA.104.L061303.
ieee: I. Cherepanov et al., “Excited rotational states of molecules in a
superfluid,” Physical Review A, vol. 104, no. 6. American Physical Society,
2021.
ista: Cherepanov I, Bighin G, Schouder CA, Chatterley AS, Albrechtsen SH, Muñoz
AV, Christiansen L, Stapelfeldt H, Lemeshko M. 2021. Excited rotational states
of molecules in a superfluid. Physical Review A. 104(6), L061303.
mla: Cherepanov, Igor, et al. “Excited Rotational States of Molecules in a Superfluid.”
Physical Review A, vol. 104, no. 6, L061303, American Physical Society,
2021, doi:10.1103/PhysRevA.104.L061303.
short: I. Cherepanov, G. Bighin, C.A. Schouder, A.S. Chatterley, S.H. Albrechtsen,
A.V. Muñoz, L. Christiansen, H. Stapelfeldt, M. Lemeshko, Physical Review A 104
(2021).
date_created: 2022-01-16T23:01:29Z
date_published: 2021-12-30T00:00:00Z
date_updated: 2023-08-17T06:52:17Z
day: '30'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.104.L061303
ec_funded: 1
external_id:
arxiv:
- '2107.00468'
isi:
- '000739618300001'
intvolume: ' 104'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://128.84.4.18/abs/2107.00468
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 26986C82-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02641
name: A path-integral approach to composite impurities
publication: Physical Review A
publication_identifier:
eissn:
- 2469-9934
issn:
- 2469-9926
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Excited rotational states of molecules in a superfluid
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 104
year: '2021'
...
---
_id: '10762'
abstract:
- lang: eng
text: Methods inspired from machine learning have recently attracted great interest
in the computational study of quantum many-particle systems. So far, however,
it has proven challenging to deal with microscopic models in which the total number
of particles is not conserved. To address this issue, we propose a new variant
of neural network states, which we term neural coherent states. Taking the Fröhlich
impurity model as a case study, we show that neural coherent states can learn
the ground state of non-additive systems very well. In particular, we observe
substantial improvement over the standard coherent state estimates in the most
challenging intermediate coupling regime. Our approach is generic and does not
assume specific details of the system, suggesting wide applications.
acknowledgement: "We acknowledge fruitful discussions with Giacomo Bighin, Giammarco
Fabiani, Areg Ghazaryan, Christoph\r\nLampert, and Artem Volosniev at various stages
of this work. W.R. is a recipient of a DOC Fellowship of the\r\nAustrian Academy
of Sciences and has received funding from the EU Horizon 2020 programme under the
Marie\r\nSkłodowska-Curie Grant Agreement No. 665385. M. L. acknowledges support
by the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). This
work is part of the Shell-NWO/FOM-initiative “Computational sciences for energy
research” of Shell and Chemical Sciences, Earth and Life Sciences, Physical Sciences,
FOM and STW."
article_processing_charge: No
author:
- first_name: Wojciech
full_name: Rzadkowski, Wojciech
id: 48C55298-F248-11E8-B48F-1D18A9856A87
last_name: Rzadkowski
orcid: 0000-0002-1106-4419
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Johan H.
full_name: Mentink, Johan H.
last_name: Mentink
citation:
ama: Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for
non-additive systems. arXiv. doi:10.48550/arXiv.2105.15193
apa: Rzadkowski, W., Lemeshko, M., & Mentink, J. H. (n.d.). Artificial neural
network states for non-additive systems. arXiv. https://doi.org/10.48550/arXiv.2105.15193
chicago: Rzadkowski, Wojciech, Mikhail Lemeshko, and Johan H. Mentink. “Artificial
Neural Network States for Non-Additive Systems.” ArXiv, n.d. https://doi.org/10.48550/arXiv.2105.15193.
ieee: W. Rzadkowski, M. Lemeshko, and J. H. Mentink, “Artificial neural network
states for non-additive systems,” arXiv. .
ista: Rzadkowski W, Lemeshko M, Mentink JH. Artificial neural network states for
non-additive systems. arXiv, 10.48550/arXiv.2105.15193.
mla: Rzadkowski, Wojciech, et al. “Artificial Neural Network States for Non-Additive
Systems.” ArXiv, doi:10.48550/arXiv.2105.15193.
short: W. Rzadkowski, M. Lemeshko, J.H. Mentink, ArXiv (n.d.).
date_created: 2022-02-17T11:18:57Z
date_published: 2021-05-31T00:00:00Z
date_updated: 2023-09-07T13:44:16Z
day: '31'
department:
- _id: MiLe
doi: 10.48550/arXiv.2105.15193
ec_funded: 1
external_id:
arxiv:
- '2105.15193'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2105.15193
month: '05'
oa: 1
oa_version: Preprint
page: '2105.15193'
project:
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: arXiv
publication_status: submitted
related_material:
record:
- id: '10759'
relation: dissertation_contains
status: public
status: public
title: Artificial neural network states for non-additive systems
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '10029'
abstract:
- lang: eng
text: Superconductor-semiconductor hybrids are platforms for realizing effective
p-wave superconductivity. Spin-orbit coupling, combined with the proximity effect,
causes the two-dimensional semiconductor to inherit p±ip intraband pairing, and
application of magnetic field can then result in transitions to the normal state,
partial Bogoliubov Fermi surfaces, or topological phases with Majorana modes.
Experimentally probing the hybrid superconductor-semiconductor interface is challenging
due to the shunting effect of the conventional superconductor. Consequently, the
nature of induced pairing remains an open question. Here, we use the circuit quantum
electrodynamics architecture to probe induced superconductivity in a two dimensional
Al-InAs hybrid system. We observe a strong suppression of superfluid density and
enhanced dissipation driven by magnetic field, which cannot be accounted for by
the depairing theory of an s-wave superconductor. These observations are explained
by a picture of independent intraband p±ip superconductors giving way to partial
Bogoliubov Fermi surfaces, and allow for the first characterization of key properties
of the hybrid superconducting system.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
acknowledgement: This research was supported by the Scientific Service Units of IST
Austria through resources provided by the MIBA Machine Shop and the nanofabrication
facility. JS and AG were supported by funding from the European Union’s Horizon
2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement
No.754411.
article_number: '2107.03695'
article_processing_charge: No
author:
- first_name: Duc T
full_name: Phan, Duc T
id: 29C8C0B4-F248-11E8-B48F-1D18A9856A87
last_name: Phan
- first_name: Jorden L
full_name: Senior, Jorden L
id: 5479D234-2D30-11EA-89CC-40953DDC885E
last_name: Senior
orcid: 0000-0002-0672-9295
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: M.
full_name: Hatefipour, M.
last_name: Hatefipour
- first_name: W. M.
full_name: Strickland, W. M.
last_name: Strickland
- first_name: J.
full_name: Shabani, J.
last_name: Shabani
- first_name: Maksym
full_name: Serbyn, Maksym
id: 47809E7E-F248-11E8-B48F-1D18A9856A87
last_name: Serbyn
orcid: 0000-0002-2399-5827
- first_name: Andrew P
full_name: Higginbotham, Andrew P
id: 4AD6785A-F248-11E8-B48F-1D18A9856A87
last_name: Higginbotham
orcid: 0000-0003-2607-2363
citation:
ama: Phan DT, Senior JL, Ghazaryan A, et al. Breakdown of induced p±ip pairing in
a superconductor-semiconductor hybrid. arXiv.
apa: Phan, D. T., Senior, J. L., Ghazaryan, A., Hatefipour, M., Strickland, W. M.,
Shabani, J., … Higginbotham, A. P. (n.d.). Breakdown of induced p±ip pairing in
a superconductor-semiconductor hybrid. arXiv.
chicago: Phan, Duc T, Jorden L Senior, Areg Ghazaryan, M. Hatefipour, W. M. Strickland,
J. Shabani, Maksym Serbyn, and Andrew P Higginbotham. “Breakdown of Induced P±ip
Pairing in a Superconductor-Semiconductor Hybrid.” ArXiv, n.d.
ieee: D. T. Phan et al., “Breakdown of induced p±ip pairing in a superconductor-semiconductor
hybrid,” arXiv. .
ista: Phan DT, Senior JL, Ghazaryan A, Hatefipour M, Strickland WM, Shabani J, Serbyn
M, Higginbotham AP. Breakdown of induced p±ip pairing in a superconductor-semiconductor
hybrid. arXiv, 2107.03695.
mla: Phan, Duc T., et al. “Breakdown of Induced P±ip Pairing in a Superconductor-Semiconductor
Hybrid.” ArXiv, 2107.03695.
short: D.T. Phan, J.L. Senior, A. Ghazaryan, M. Hatefipour, W.M. Strickland, J.
Shabani, M. Serbyn, A.P. Higginbotham, ArXiv (n.d.).
date_created: 2021-09-21T08:41:02Z
date_published: 2021-07-08T00:00:00Z
date_updated: 2024-02-21T12:36:52Z
day: '08'
department:
- _id: MaSe
- _id: AnHi
- _id: MiLe
ec_funded: 1
external_id:
arxiv:
- '2107.03695'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2107.03695
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: arXiv
publication_status: submitted
related_material:
record:
- id: '10851'
relation: later_version
status: public
- id: '9636'
relation: research_data
status: public
status: public
title: Breakdown of induced p±ip pairing in a superconductor-semiconductor hybrid
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '10134'
abstract:
- lang: eng
text: We investigate the effect of coupling between translational and internal degrees
of freedom of composite quantum particles on their localization in a random potential.
We show that entanglement between the two degrees of freedom weakens localization
due to the upper bound imposed on the inverse participation ratio by purity of
a quantum state. We perform numerical calculations for a two-particle system bound
by a harmonic force in a 1D disordered lattice and a rigid rotor in a 2D disordered
lattice. We illustrate that the coupling has a dramatic effect on localization
properties, even with a small number of internal states participating in quantum
dynamics.
acknowledgement: "We acknowledge helpful discussions with W. G. Unruh and A. Rodriguez.
F. S. is supported by European Union’s\r\nHorizon 2020 research and innovation programme
under the Marie Skłodowska-Curie Grant No. 754411. M. L. acknowledges support by
the European Research Council (ERC) Starting Grant No. 801770 (ANGULON). W. H. Z.
is\r\nsupported by Department of Energy under the Los\r\nAlamos National Laboratory
LDRD Program as well as by the U.S. Department of Energy, Office of Science, Basic\r\nEnergy
Sciences, Materials Sciences and Engineering Division, Condensed Matter Theory Program.
R. V. K. is supported by NSERC of Canada.\r\n"
article_number: '160602'
article_processing_charge: No
article_type: original
author:
- first_name: Fumika
full_name: Suzuki, Fumika
id: 650C99FC-1079-11EA-A3C0-73AE3DDC885E
last_name: Suzuki
orcid: 0000-0003-4982-5970
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Wojciech H.
full_name: Zurek, Wojciech H.
last_name: Zurek
- first_name: Roman V.
full_name: Krems, Roman V.
last_name: Krems
citation:
ama: Suzuki F, Lemeshko M, Zurek WH, Krems RV. Anderson localization of composite
particles. Physical Review Letters. 2021;127(16). doi:10.1103/physrevlett.127.160602
apa: Suzuki, F., Lemeshko, M., Zurek, W. H., & Krems, R. V. (2021). Anderson
localization of composite particles. Physical Review Letters. American
Physical Society . https://doi.org/10.1103/physrevlett.127.160602
chicago: Suzuki, Fumika, Mikhail Lemeshko, Wojciech H. Zurek, and Roman V. Krems.
“Anderson Localization of Composite Particles.” Physical Review Letters.
American Physical Society , 2021. https://doi.org/10.1103/physrevlett.127.160602.
ieee: F. Suzuki, M. Lemeshko, W. H. Zurek, and R. V. Krems, “Anderson localization
of composite particles,” Physical Review Letters, vol. 127, no. 16. American
Physical Society , 2021.
ista: Suzuki F, Lemeshko M, Zurek WH, Krems RV. 2021. Anderson localization of composite
particles. Physical Review Letters. 127(16), 160602.
mla: Suzuki, Fumika, et al. “Anderson Localization of Composite Particles.” Physical
Review Letters, vol. 127, no. 16, 160602, American Physical Society , 2021,
doi:10.1103/physrevlett.127.160602.
short: F. Suzuki, M. Lemeshko, W.H. Zurek, R.V. Krems, Physical Review Letters 127
(2021).
date_created: 2021-10-13T09:21:33Z
date_published: 2021-10-12T00:00:00Z
date_updated: 2024-02-29T12:34:10Z
day: '12'
department:
- _id: MiLe
doi: 10.1103/physrevlett.127.160602
ec_funded: 1
external_id:
arxiv:
- '2011.06279'
isi:
- '000707495700001'
intvolume: ' 127'
isi: 1
issue: '16'
keyword:
- General Physics and Astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2011.06279
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: 'American Physical Society '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Anderson localization of composite particles
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 127
year: '2021'
...
---
_id: '7594'
abstract:
- lang: eng
text: The concept of the entanglement between spin and orbital degrees of freedom
plays a crucial role in our understanding of various phases and exotic ground
states in a broad class of materials, including orbitally ordered materials and
spin liquids. We investigate how the spin-orbital entanglement in a Mott insulator
depends on the value of the spin-orbit coupling of the relativistic origin. To
this end, we numerically diagonalize a one-dimensional spin-orbital model with
Kugel-Khomskii exchange interactions between spins and orbitals on different sites
supplemented by the on-site spin-orbit coupling. In the regime of small spin-orbit
coupling with regard to the spin-orbital exchange, the ground state to a large
extent resembles the one obtained in the limit of vanishing spin-orbit coupling.
On the other hand, for large spin-orbit coupling the ground state can, depending
on the model parameters, either still show negligible spin-orbital entanglement
or evolve to a highly spin-orbitally-entangled phase with completely distinct
properties that are described by an effective XXZ model. The presented results
suggest that (i) the spin-orbital entanglement may be induced by large on-site
spin-orbit coupling, as found in the 5d transition metal oxides, such as the iridates;
(ii) for Mott insulators with weak spin-orbit coupling of Ising type, such as,
e.g., the alkali hyperoxides, the effects of the spin-orbit coupling on the ground
state can, in the first order of perturbation theory, be neglected.
article_number: '013353'
article_processing_charge: No
article_type: original
author:
- first_name: Dorota
full_name: Gotfryd, Dorota
last_name: Gotfryd
- first_name: Ekaterina
full_name: Paerschke, Ekaterina
id: 8275014E-6063-11E9-9B7F-6338E6697425
last_name: Paerschke
orcid: 0000-0003-0853-8182
- first_name: Jiri
full_name: Chaloupka, Jiri
last_name: Chaloupka
- first_name: Andrzej M.
full_name: Oles, Andrzej M.
last_name: Oles
- first_name: Krzysztof
full_name: Wohlfeld, Krzysztof
last_name: Wohlfeld
citation:
ama: Gotfryd D, Paerschke E, Chaloupka J, Oles AM, Wohlfeld K. How spin-orbital
entanglement depends on the spin-orbit coupling in a Mott insulator. Physical
Review Research. 2020;2(1). doi:10.1103/PhysRevResearch.2.013353
apa: Gotfryd, D., Paerschke, E., Chaloupka, J., Oles, A. M., & Wohlfeld, K.
(2020). How spin-orbital entanglement depends on the spin-orbit coupling in a
Mott insulator. Physical Review Research. American Physical Society. https://doi.org/10.1103/PhysRevResearch.2.013353
chicago: Gotfryd, Dorota, Ekaterina Paerschke, Jiri Chaloupka, Andrzej M. Oles,
and Krzysztof Wohlfeld. “How Spin-Orbital Entanglement Depends on the Spin-Orbit
Coupling in a Mott Insulator.” Physical Review Research. American Physical
Society, 2020. https://doi.org/10.1103/PhysRevResearch.2.013353.
ieee: D. Gotfryd, E. Paerschke, J. Chaloupka, A. M. Oles, and K. Wohlfeld, “How
spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator,”
Physical Review Research, vol. 2, no. 1. American Physical Society, 2020.
ista: Gotfryd D, Paerschke E, Chaloupka J, Oles AM, Wohlfeld K. 2020. How spin-orbital
entanglement depends on the spin-orbit coupling in a Mott insulator. Physical
Review Research. 2(1), 013353.
mla: Gotfryd, Dorota, et al. “How Spin-Orbital Entanglement Depends on the Spin-Orbit
Coupling in a Mott Insulator.” Physical Review Research, vol. 2, no. 1,
013353, American Physical Society, 2020, doi:10.1103/PhysRevResearch.2.013353.
short: D. Gotfryd, E. Paerschke, J. Chaloupka, A.M. Oles, K. Wohlfeld, Physical
Review Research 2 (2020).
date_created: 2020-03-20T15:21:10Z
date_published: 2020-03-20T00:00:00Z
date_updated: 2021-01-12T08:14:23Z
day: '20'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/PhysRevResearch.2.013353
ec_funded: 1
file:
- access_level: open_access
checksum: 1be551fd5f5583635076017d7391ffdc
content_type: application/pdf
creator: dernst
date_created: 2020-03-23T10:18:38Z
date_updated: 2020-07-14T12:48:00Z
file_id: '7610'
file_name: 2020_PhysRevResearch_Gotfryd.pdf
file_size: 1436735
relation: main_file
file_date_updated: 2020-07-14T12:48:00Z
has_accepted_license: '1'
intvolume: ' 2'
issue: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Research
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: How spin-orbital entanglement depends on the spin-orbit coupling in a Mott
insulator
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2
year: '2020'
...
---
_id: '7919'
abstract:
- lang: eng
text: We explore the time evolution of two impurities in a trapped one-dimensional
Bose gas that follows a change of the boson-impurity interaction. We study the
induced impurity-impurity interactions and their effect on the quench dynamics.
In particular, we report on the size of the impurity cloud, the impurity-impurity
entanglement, and the impurity-impurity correlation function. The presented numerical
simulations are based upon the variational multilayer multiconfiguration time-dependent
Hartree method for bosons. To analyze and quantify induced impurity-impurity correlations,
we employ an effective two-body Hamiltonian with a contact interaction. We show
that the effective model consistent with the mean-field attraction of two heavy
impurities explains qualitatively our results for weak interactions. Our findings
suggest that the quench dynamics in cold-atom systems can be a tool for studying
impurity-impurity correlations.
article_number: '023154 '
article_processing_charge: No
article_type: original
author:
- first_name: S. I.
full_name: Mistakidis, S. I.
last_name: Mistakidis
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: P.
full_name: Schmelcher, P.
last_name: Schmelcher
citation:
ama: Mistakidis SI, Volosniev A, Schmelcher P. Induced correlations between impurities
in a one-dimensional quenched Bose gas. Physical Review Research. 2020;2.
doi:10.1103/physrevresearch.2.023154
apa: Mistakidis, S. I., Volosniev, A., & Schmelcher, P. (2020). Induced correlations
between impurities in a one-dimensional quenched Bose gas. Physical Review
Research. American Physical Society. https://doi.org/10.1103/physrevresearch.2.023154
chicago: Mistakidis, S. I., Artem Volosniev, and P. Schmelcher. “Induced Correlations
between Impurities in a One-Dimensional Quenched Bose Gas.” Physical Review
Research. American Physical Society, 2020. https://doi.org/10.1103/physrevresearch.2.023154.
ieee: S. I. Mistakidis, A. Volosniev, and P. Schmelcher, “Induced correlations between
impurities in a one-dimensional quenched Bose gas,” Physical Review Research,
vol. 2. American Physical Society, 2020.
ista: Mistakidis SI, Volosniev A, Schmelcher P. 2020. Induced correlations between
impurities in a one-dimensional quenched Bose gas. Physical Review Research. 2,
023154.
mla: Mistakidis, S. I., et al. “Induced Correlations between Impurities in a One-Dimensional
Quenched Bose Gas.” Physical Review Research, vol. 2, 023154, American
Physical Society, 2020, doi:10.1103/physrevresearch.2.023154.
short: S.I. Mistakidis, A. Volosniev, P. Schmelcher, Physical Review Research 2
(2020).
date_created: 2020-06-03T11:30:10Z
date_published: 2020-05-11T00:00:00Z
date_updated: 2023-02-23T13:20:16Z
day: '11'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/physrevresearch.2.023154
ec_funded: 1
file:
- access_level: open_access
checksum: e1c362fe094d6b246b3cd4a49722e78b
content_type: application/pdf
creator: dernst
date_created: 2020-06-04T13:51:59Z
date_updated: 2020-07-14T12:48:05Z
file_id: '7926'
file_name: 2020_PhysRevResearch_Mistakidis.pdf
file_size: 1741098
relation: main_file
file_date_updated: 2020-07-14T12:48:05Z
has_accepted_license: '1'
intvolume: ' 2'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Induced correlations between impurities in a one-dimensional quenched Bose
gas
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2
year: '2020'
...
---
_id: '8726'
abstract:
- lang: eng
text: Several realistic spin-orbital models for transition metal oxides go beyond
the classical expectations and could be understood only by employing the quantum
entanglement. Experiments on these materials confirm that spin-orbital entanglement
has measurable consequences. Here, we capture the essential features of spin-orbital
entanglement in complex quantum matter utilizing 1D spin-orbital model which accommodates
SU(2)⊗SU(2) symmetric Kugel-Khomskii superexchange as well as the Ising on-site
spin-orbit coupling. Building on the results obtained for full and effective models
in the regime of strong spin-orbit coupling, we address the question whether the
entanglement found on superexchange bonds always increases when the Ising spin-orbit
coupling is added. We show that (i) quantum entanglement is amplified by strong
spin-orbit coupling and, surprisingly, (ii) almost classical disentangled states
are possible. We complete the latter case by analyzing how the entanglement existing
for intermediate values of spin-orbit coupling can disappear for higher values
of this coupling.
article_number: '53'
article_processing_charge: No
article_type: original
author:
- first_name: Dorota
full_name: Gotfryd, Dorota
last_name: Gotfryd
- first_name: Ekaterina
full_name: Paerschke, Ekaterina
id: 8275014E-6063-11E9-9B7F-6338E6697425
last_name: Paerschke
orcid: 0000-0003-0853-8182
- first_name: Krzysztof
full_name: Wohlfeld, Krzysztof
last_name: Wohlfeld
- first_name: Andrzej M.
full_name: Oleś, Andrzej M.
last_name: Oleś
citation:
ama: Gotfryd D, Paerschke E, Wohlfeld K, Oleś AM. Evolution of spin-orbital entanglement
with increasing ising spin-orbit coupling. Condensed Matter. 2020;5(3).
doi:10.3390/condmat5030053
apa: Gotfryd, D., Paerschke, E., Wohlfeld, K., & Oleś, A. M. (2020). Evolution
of spin-orbital entanglement with increasing ising spin-orbit coupling. Condensed
Matter. MDPI. https://doi.org/10.3390/condmat5030053
chicago: Gotfryd, Dorota, Ekaterina Paerschke, Krzysztof Wohlfeld, and Andrzej M.
Oleś. “Evolution of Spin-Orbital Entanglement with Increasing Ising Spin-Orbit
Coupling.” Condensed Matter. MDPI, 2020. https://doi.org/10.3390/condmat5030053.
ieee: D. Gotfryd, E. Paerschke, K. Wohlfeld, and A. M. Oleś, “Evolution of spin-orbital
entanglement with increasing ising spin-orbit coupling,” Condensed Matter,
vol. 5, no. 3. MDPI, 2020.
ista: Gotfryd D, Paerschke E, Wohlfeld K, Oleś AM. 2020. Evolution of spin-orbital
entanglement with increasing ising spin-orbit coupling. Condensed Matter. 5(3),
53.
mla: Gotfryd, Dorota, et al. “Evolution of Spin-Orbital Entanglement with Increasing
Ising Spin-Orbit Coupling.” Condensed Matter, vol. 5, no. 3, 53, MDPI,
2020, doi:10.3390/condmat5030053.
short: D. Gotfryd, E. Paerschke, K. Wohlfeld, A.M. Oleś, Condensed Matter 5 (2020).
date_created: 2020-11-06T07:21:00Z
date_published: 2020-08-26T00:00:00Z
date_updated: 2021-01-12T08:20:46Z
day: '26'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.3390/condmat5030053
ec_funded: 1
external_id:
arxiv:
- '2009.11773'
file:
- access_level: open_access
checksum: a57a698ff99a11b6665bafd1bac7afbc
content_type: application/pdf
creator: dernst
date_created: 2020-11-06T07:24:40Z
date_updated: 2020-11-06T07:24:40Z
file_id: '8727'
file_name: 2020_CondensedMatter_Gotfryd.pdf
file_size: 768336
relation: main_file
success: 1
file_date_updated: 2020-11-06T07:24:40Z
has_accepted_license: '1'
intvolume: ' 5'
issue: '3'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Condensed Matter
publication_identifier:
issn:
- 2410-3896
publication_status: published
publisher: MDPI
quality_controlled: '1'
scopus_import: '1'
status: public
title: Evolution of spin-orbital entanglement with increasing ising spin-orbit coupling
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2020'
...
---
_id: '7882'
abstract:
- lang: eng
text: A few-body cluster is a building block of a many-body system in a gas phase
provided the temperature at most is of the order of the binding energy of this
cluster. Here we illustrate this statement by considering a system of tubes filled
with dipolar distinguishable particles. We calculate the partition function, which
determines the probability to find a few-body cluster at a given temperature.
The input for our calculations—the energies of few-body clusters—is estimated
using the harmonic approximation. We first describe and demonstrate the validity
of our numerical procedure. Then we discuss the results featuring melting of the
zero-temperature many-body state into a gas of free particles and few-body clusters.
For temperature higher than its binding energy threshold, the dimers overwhelmingly
dominate the ensemble, where the remaining probability is in free particles. At
very high temperatures free (harmonic oscillator trap-bound) particle dominance
is eventually reached. This structure evolution appears both for one and two particles
in each layer providing crucial information about the behavior of ultracold dipolar
gases. The investigation addresses the transition region between few- and many-body
physics as a function of temperature using a system of ten dipoles in five tubes.
article_number: '484'
article_processing_charge: No
article_type: original
author:
- first_name: Jeremy R.
full_name: Armstrong, Jeremy R.
last_name: Armstrong
- first_name: Aksel S.
full_name: Jensen, Aksel S.
last_name: Jensen
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
- first_name: Nikolaj T.
full_name: Zinner, Nikolaj T.
last_name: Zinner
citation:
ama: Armstrong JR, Jensen AS, Volosniev A, Zinner NT. Clusters in separated tubes
of tilted dipoles. Mathematics. 2020;8(4). doi:10.3390/math8040484
apa: Armstrong, J. R., Jensen, A. S., Volosniev, A., & Zinner, N. T. (2020).
Clusters in separated tubes of tilted dipoles. Mathematics. MDPI. https://doi.org/10.3390/math8040484
chicago: Armstrong, Jeremy R., Aksel S. Jensen, Artem Volosniev, and Nikolaj T.
Zinner. “Clusters in Separated Tubes of Tilted Dipoles.” Mathematics. MDPI,
2020. https://doi.org/10.3390/math8040484.
ieee: J. R. Armstrong, A. S. Jensen, A. Volosniev, and N. T. Zinner, “Clusters in
separated tubes of tilted dipoles,” Mathematics, vol. 8, no. 4. MDPI, 2020.
ista: Armstrong JR, Jensen AS, Volosniev A, Zinner NT. 2020. Clusters in separated
tubes of tilted dipoles. Mathematics. 8(4), 484.
mla: Armstrong, Jeremy R., et al. “Clusters in Separated Tubes of Tilted Dipoles.”
Mathematics, vol. 8, no. 4, 484, MDPI, 2020, doi:10.3390/math8040484.
short: J.R. Armstrong, A.S. Jensen, A. Volosniev, N.T. Zinner, Mathematics 8 (2020).
date_created: 2020-05-24T22:01:00Z
date_published: 2020-04-01T00:00:00Z
date_updated: 2023-08-21T06:23:36Z
day: '01'
ddc:
- '510'
department:
- _id: MiLe
doi: 10.3390/math8040484
ec_funded: 1
external_id:
isi:
- '000531824100024'
file:
- access_level: open_access
checksum: a05a7df724522203d079673a0d4de4bc
content_type: application/pdf
creator: dernst
date_created: 2020-05-25T14:42:22Z
date_updated: 2020-07-14T12:48:04Z
file_id: '7887'
file_name: 2020_Mathematics_Armstrong.pdf
file_size: 990540
relation: main_file
file_date_updated: 2020-07-14T12:48:04Z
has_accepted_license: '1'
intvolume: ' 8'
isi: 1
issue: '4'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Mathematics
publication_identifier:
eissn:
- '22277390'
publication_status: published
publisher: MDPI
quality_controlled: '1'
scopus_import: '1'
status: public
title: Clusters in separated tubes of tilted dipoles
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 8
year: '2020'
...
---
_id: '7933'
abstract:
- lang: eng
text: We study a mobile quantum impurity, possessing internal rotational degrees
of freedom, confined to a ring in the presence of a many-particle bosonic bath.
By considering the recently introduced rotating polaron problem, we define the
Hamiltonian and examine the energy spectrum. The weak-coupling regime is studied
by means of a variational ansatz in the truncated Fock space. The corresponding
spectrum indicates that there emerges a coupling between the internal and orbital
angular momenta of the impurity as a consequence of the phonon exchange. We interpret
the coupling as a phonon-mediated spin-orbit coupling and quantify it by using
a correlation function between the internal and the orbital angular momentum operators.
The strong-coupling regime is investigated within the Pekar approach, and it is
shown that the correlation function of the ground state shows a kink at a critical
coupling, that is explained by a sharp transition from the noninteracting state
to the states that exhibit strong interaction with the surroundings. The results
might find applications in such fields as spintronics or topological insulators
where spin-orbit coupling is of crucial importance.
article_number: '184104 '
article_processing_charge: No
article_type: original
author:
- first_name: Mikhail
full_name: Maslov, Mikhail
id: 2E65BB0E-F248-11E8-B48F-1D18A9856A87
last_name: Maslov
orcid: 0000-0003-4074-2570
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
citation:
ama: Maslov M, Lemeshko M, Yakaboylu E. Synthetic spin-orbit coupling mediated by
a bosonic environment. Physical Review B. 2020;101(18). doi:10.1103/PhysRevB.101.184104
apa: Maslov, M., Lemeshko, M., & Yakaboylu, E. (2020). Synthetic spin-orbit
coupling mediated by a bosonic environment. Physical Review B. American
Physical Society. https://doi.org/10.1103/PhysRevB.101.184104
chicago: Maslov, Mikhail, Mikhail Lemeshko, and Enderalp Yakaboylu. “Synthetic Spin-Orbit
Coupling Mediated by a Bosonic Environment.” Physical Review B. American
Physical Society, 2020. https://doi.org/10.1103/PhysRevB.101.184104.
ieee: M. Maslov, M. Lemeshko, and E. Yakaboylu, “Synthetic spin-orbit coupling mediated
by a bosonic environment,” Physical Review B, vol. 101, no. 18. American
Physical Society, 2020.
ista: Maslov M, Lemeshko M, Yakaboylu E. 2020. Synthetic spin-orbit coupling mediated
by a bosonic environment. Physical Review B. 101(18), 184104.
mla: Maslov, Mikhail, et al. “Synthetic Spin-Orbit Coupling Mediated by a Bosonic
Environment.” Physical Review B, vol. 101, no. 18, 184104, American Physical
Society, 2020, doi:10.1103/PhysRevB.101.184104.
short: M. Maslov, M. Lemeshko, E. Yakaboylu, Physical Review B 101 (2020).
date_created: 2020-06-07T22:00:52Z
date_published: 2020-05-01T00:00:00Z
date_updated: 2023-08-21T07:05:15Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.101.184104
ec_funded: 1
external_id:
arxiv:
- '1912.03092'
isi:
- '000530754700003'
intvolume: ' 101'
isi: 1
issue: '18'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1912.03092
month: '05'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review B
publication_identifier:
eissn:
- '24699969'
issn:
- '24699950'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Synthetic spin-orbit coupling mediated by a bosonic environment
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 101
year: '2020'
...
---
_id: '8170'
abstract:
- lang: eng
text: "Alignment of OCS, CS2, and I2 molecules embedded in helium nanodroplets is
measured as a function\r\nof time following rotational excitation by a nonresonant,
comparatively weak ps laser pulse. The distinct\r\npeaks in the power spectra,
obtained by Fourier analysis, are used to determine the rotational, B, and\r\ncentrifugal
distortion, D, constants. For OCS, B and D match the values known from IR spectroscopy.
For\r\nCS2 and I2, they are the first experimental results reported. The alignment
dynamics calculated from the\r\ngas-phase rotational Schrödinger equation, using
the experimental in-droplet B and D values, agree in\r\ndetail with the measurement
for all three molecules. The rotational spectroscopy technique for molecules in\r\nhelium
droplets introduced here should apply to a range of molecules and complexes."
acknowledgement: "H. S. acknowledges support from the European Research Council-AdG
(Project No. 320459, DropletControl)\r\nand from The Villum Foundation through a
Villum Investigator Grant No. 25886. M. L. acknowledges support\r\nby the Austrian
Science Fund (FWF), under Project No. P29902-N27, and by the European Research Council\r\n(ERC)
Starting Grant No. 801770 (ANGULON). G. B. acknowledges support from the Austrian
Science Fund\r\n(FWF), under Project No. M2641-N27. I. C. acknowledges support by
the European Union’s Horizon 2020 research and\r\ninnovation programme under the
Marie Skłodowska-Curie Grant Agreement No. 665385. Computational resources for\r\nthe
PIMC simulations were provided by the division for scientific computing at the Johannes
Kepler University."
article_number: '013001'
article_processing_charge: No
article_type: original
author:
- first_name: Adam S.
full_name: Chatterley, Adam S.
last_name: Chatterley
- first_name: Lars
full_name: Christiansen, Lars
last_name: Christiansen
- first_name: Constant A.
full_name: Schouder, Constant A.
last_name: Schouder
- first_name: Anders V.
full_name: Jørgensen, Anders V.
last_name: Jørgensen
- first_name: Benjamin
full_name: Shepperson, Benjamin
last_name: Shepperson
- first_name: Igor
full_name: Cherepanov, Igor
id: 339C7E5A-F248-11E8-B48F-1D18A9856A87
last_name: Cherepanov
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Robert E.
full_name: Zillich, Robert E.
last_name: Zillich
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Henrik
full_name: Stapelfeldt, Henrik
last_name: Stapelfeldt
citation:
ama: 'Chatterley AS, Christiansen L, Schouder CA, et al. Rotational coherence spectroscopy
of molecules in Helium nanodroplets: Reconciling the time and the frequency domains.
Physical Review Letters. 2020;125(1). doi:10.1103/PhysRevLett.125.013001'
apa: 'Chatterley, A. S., Christiansen, L., Schouder, C. A., Jørgensen, A. V., Shepperson,
B., Cherepanov, I., … Stapelfeldt, H. (2020). Rotational coherence spectroscopy
of molecules in Helium nanodroplets: Reconciling the time and the frequency domains.
Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.125.013001'
chicago: 'Chatterley, Adam S., Lars Christiansen, Constant A. Schouder, Anders V.
Jørgensen, Benjamin Shepperson, Igor Cherepanov, Giacomo Bighin, Robert E. Zillich,
Mikhail Lemeshko, and Henrik Stapelfeldt. “Rotational Coherence Spectroscopy of
Molecules in Helium Nanodroplets: Reconciling the Time and the Frequency Domains.”
Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/PhysRevLett.125.013001.'
ieee: 'A. S. Chatterley et al., “Rotational coherence spectroscopy of molecules
in Helium nanodroplets: Reconciling the time and the frequency domains,” Physical
Review Letters, vol. 125, no. 1. American Physical Society, 2020.'
ista: 'Chatterley AS, Christiansen L, Schouder CA, Jørgensen AV, Shepperson B, Cherepanov
I, Bighin G, Zillich RE, Lemeshko M, Stapelfeldt H. 2020. Rotational coherence
spectroscopy of molecules in Helium nanodroplets: Reconciling the time and the
frequency domains. Physical Review Letters. 125(1), 013001.'
mla: 'Chatterley, Adam S., et al. “Rotational Coherence Spectroscopy of Molecules
in Helium Nanodroplets: Reconciling the Time and the Frequency Domains.” Physical
Review Letters, vol. 125, no. 1, 013001, American Physical Society, 2020,
doi:10.1103/PhysRevLett.125.013001.'
short: A.S. Chatterley, L. Christiansen, C.A. Schouder, A.V. Jørgensen, B. Shepperson,
I. Cherepanov, G. Bighin, R.E. Zillich, M. Lemeshko, H. Stapelfeldt, Physical
Review Letters 125 (2020).
date_created: 2020-07-26T22:01:02Z
date_published: 2020-07-03T00:00:00Z
date_updated: 2023-08-22T08:22:43Z
day: '03'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.125.013001
ec_funded: 1
external_id:
arxiv:
- '2006.02694'
isi:
- '000544526900006'
intvolume: ' 125'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2006.02694
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 26986C82-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02641
name: A path-integral approach to composite impurities
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: Physical Review Letters
publication_identifier:
eissn:
- '10797114'
issn:
- '00319007'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Rotational coherence spectroscopy of molecules in Helium nanodroplets: Reconciling
the time and the frequency domains'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 125
year: '2020'
...
---
_id: '8652'
abstract:
- lang: eng
text: Nature creates electrons with two values of the spin projection quantum number.
In certain applications, it is important to filter electrons with one spin projection
from the rest. Such filtering is not trivial, since spin-dependent interactions
are often weak, and cannot lead to any substantial effect. Here we propose an
efficient spin filter based upon scattering from a two-dimensional crystal, which
is made of aligned point magnets. The polarization of the outgoing electron flux
is controlled by the crystal, and reaches maximum at specific values of the parameters.
In our scheme, polarization increase is accompanied by higher reflectivity of
the crystal. High transmission is feasible in scattering from a quantum cavity
made of two crystals. Our findings can be used for studies of low-energy spin-dependent
scattering from two-dimensional ordered structures made of magnetic atoms or aligned
chiral molecules.
acknowledgement: "This work has received funding from the European Union’s Horizon
2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement
No. 754411 (A.G.V. and A.G.). M.L. acknowledges support by the Austrian Science
Fund (FWF), under project No. P29902-N27, and by the European Research Council (ERC)
Starting\r\nGrant No. 801770 (ANGULON)."
article_number: '178'
article_processing_charge: Yes
article_type: original
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Ghazaryan A, Lemeshko M, Volosniev A. Filtering spins by scattering from a
lattice of point magnets. Communications Physics. 2020;3. doi:10.1038/s42005-020-00445-8
apa: Ghazaryan, A., Lemeshko, M., & Volosniev, A. (2020). Filtering spins by
scattering from a lattice of point magnets. Communications Physics. Springer
Nature. https://doi.org/10.1038/s42005-020-00445-8
chicago: Ghazaryan, Areg, Mikhail Lemeshko, and Artem Volosniev. “Filtering Spins
by Scattering from a Lattice of Point Magnets.” Communications Physics.
Springer Nature, 2020. https://doi.org/10.1038/s42005-020-00445-8.
ieee: A. Ghazaryan, M. Lemeshko, and A. Volosniev, “Filtering spins by scattering
from a lattice of point magnets,” Communications Physics, vol. 3. Springer
Nature, 2020.
ista: Ghazaryan A, Lemeshko M, Volosniev A. 2020. Filtering spins by scattering
from a lattice of point magnets. Communications Physics. 3, 178.
mla: Ghazaryan, Areg, et al. “Filtering Spins by Scattering from a Lattice of Point
Magnets.” Communications Physics, vol. 3, 178, Springer Nature, 2020, doi:10.1038/s42005-020-00445-8.
short: A. Ghazaryan, M. Lemeshko, A. Volosniev, Communications Physics 3 (2020).
date_created: 2020-10-13T09:48:59Z
date_published: 2020-10-09T00:00:00Z
date_updated: 2023-08-22T09:58:46Z
day: '09'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1038/s42005-020-00445-8
ec_funded: 1
external_id:
isi:
- '000581681000001'
file:
- access_level: open_access
checksum: 60cd35b99f0780acffc7b6060e49ec8b
content_type: application/pdf
creator: dernst
date_created: 2020-10-14T15:16:28Z
date_updated: 2020-10-14T15:16:28Z
file_id: '8662'
file_name: 2020_CommPhysics_Ghazaryan.pdf
file_size: 1462934
relation: main_file
success: 1
file_date_updated: 2020-10-14T15:16:28Z
has_accepted_license: '1'
intvolume: ' 3'
isi: 1
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Communications Physics
publication_identifier:
issn:
- 2399-3650
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Filtering spins by scattering from a lattice of point magnets
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 3
year: '2020'
...
---
_id: '8699'
abstract:
- lang: eng
text: In the high spin–orbit-coupled Sr2IrO4, the high sensitivity of the ground
state to the details of the local lattice structure shows a large potential for
the manipulation of the functional properties by inducing local lattice distortions.
We use epitaxial strain to modify the Ir–O bond geometry in Sr2IrO4 and perform
momentum-dependent resonant inelastic X-ray scattering (RIXS) at the metal and
at the ligand sites to unveil the response of the low-energy elementary excitations.
We observe that the pseudospin-wave dispersion for tensile-strained Sr2IrO4 films
displays large softening along the [h,0] direction, while along the [h,h] direction
it shows hardening. This evolution reveals a renormalization of the magnetic interactions
caused by a strain-driven cross-over from anisotropic to isotropic interactions
between the magnetic moments. Moreover, we detect dispersive electron–hole pair
excitations which shift to lower (higher) energies upon compressive (tensile)
strain, manifesting a reduction (increase) in the size of the charge gap. This
behavior shows an intimate coupling between charge excitations and lattice distortions
in Sr2IrO4, originating from the modified hopping elements between the t2g orbitals.
Our work highlights the central role played by the lattice degrees of freedom
in determining both the pseudospin and charge excitations of Sr2IrO4 and provides
valuable information toward the control of the ground state of complex oxides
in the presence of high spin–orbit coupling.
acknowledgement: 'We gratefully acknowledge C. Sahle for experimental support at the
ID20 beamline of the ESRF. The soft X-ray experiments were carried out at the ADRESS
beamline of the Swiss Light Source, Paul Scherrer Institut (PSI). E. Paris and T.S.
thank X. Lu and C. Monney for valuable discussions. The work at PSI is supported
by the Swiss National Science Foundation (SNSF) through Project 200021_178867, the
NCCR (National Centre of Competence in Research) MARVEL (Materials’ Revolution:
Computational Design and Discovery of Novel Materials) and the Sinergia network
Mott Physics Beyond the Heisenberg Model (MPBH) (SNSF Research Grants CRSII2_160765/1
and CRSII2_141962). K.W. acknowledges support by the Narodowe Centrum Nauki Projects
2016/22/E/ST3/00560 and 2016/23/B/ST3/00839. E.M.P. and M.N. acknowledge funding
from the European Union’s Horizon 2020 research and innovation programme under the
Marie Sklodowska-Curie Grant Agreements 754411 and 701647, respectively. M.R. was
supported by the Swiss National Science Foundation under Project 200021 – 182695.
This research used resources of the APS, a U.S. Department of Energy (DOE) Office
of Science User Facility operated for the DOE Office of Science by Argonne National
Laboratory under Contract DE-AC02-06CH11357.'
article_processing_charge: No
article_type: original
author:
- first_name: Eugenio
full_name: Paris, Eugenio
last_name: Paris
- first_name: Yi
full_name: Tseng, Yi
last_name: Tseng
- first_name: Ekaterina
full_name: Paerschke, Ekaterina
id: 8275014E-6063-11E9-9B7F-6338E6697425
last_name: Paerschke
orcid: 0000-0003-0853-8182
- first_name: Wenliang
full_name: Zhang, Wenliang
last_name: Zhang
- first_name: Mary H
full_name: Upton, Mary H
last_name: Upton
- first_name: Anna
full_name: Efimenko, Anna
last_name: Efimenko
- first_name: Katharina
full_name: Rolfs, Katharina
last_name: Rolfs
- first_name: Daniel E
full_name: McNally, Daniel E
last_name: McNally
- first_name: Laura
full_name: Maurel, Laura
last_name: Maurel
- first_name: Muntaser
full_name: Naamneh, Muntaser
last_name: Naamneh
- first_name: Marco
full_name: Caputo, Marco
last_name: Caputo
- first_name: Vladimir N
full_name: Strocov, Vladimir N
last_name: Strocov
- first_name: Zhiming
full_name: Wang, Zhiming
last_name: Wang
- first_name: Diego
full_name: Casa, Diego
last_name: Casa
- first_name: Christof W
full_name: Schneider, Christof W
last_name: Schneider
- first_name: Ekaterina
full_name: Pomjakushina, Ekaterina
last_name: Pomjakushina
- first_name: Krzysztof
full_name: Wohlfeld, Krzysztof
last_name: Wohlfeld
- first_name: Milan
full_name: Radovic, Milan
last_name: Radovic
- first_name: Thorsten
full_name: Schmitt, Thorsten
last_name: Schmitt
citation:
ama: Paris E, Tseng Y, Paerschke E, et al. Strain engineering of the charge and
spin-orbital interactions in Sr2IrO4. Proceedings of the National Academy of
Sciences of the United States of America. 2020;117(40):24764-24770. doi:10.1073/pnas.2012043117
apa: Paris, E., Tseng, Y., Paerschke, E., Zhang, W., Upton, M. H., Efimenko, A.,
… Schmitt, T. (2020). Strain engineering of the charge and spin-orbital interactions
in Sr2IrO4. Proceedings of the National Academy of Sciences of the United States
of America. National Academy of Sciences. https://doi.org/10.1073/pnas.2012043117
chicago: Paris, Eugenio, Yi Tseng, Ekaterina Paerschke, Wenliang Zhang, Mary H Upton,
Anna Efimenko, Katharina Rolfs, et al. “Strain Engineering of the Charge and Spin-Orbital
Interactions in Sr2IrO4.” Proceedings of the National Academy of Sciences of
the United States of America. National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2012043117.
ieee: E. Paris et al., “Strain engineering of the charge and spin-orbital
interactions in Sr2IrO4,” Proceedings of the National Academy of Sciences of
the United States of America, vol. 117, no. 40. National Academy of Sciences,
pp. 24764–24770, 2020.
ista: Paris E, Tseng Y, Paerschke E, Zhang W, Upton MH, Efimenko A, Rolfs K, McNally
DE, Maurel L, Naamneh M, Caputo M, Strocov VN, Wang Z, Casa D, Schneider CW, Pomjakushina
E, Wohlfeld K, Radovic M, Schmitt T. 2020. Strain engineering of the charge and
spin-orbital interactions in Sr2IrO4. Proceedings of the National Academy of Sciences
of the United States of America. 117(40), 24764–24770.
mla: Paris, Eugenio, et al. “Strain Engineering of the Charge and Spin-Orbital Interactions
in Sr2IrO4.” Proceedings of the National Academy of Sciences of the United
States of America, vol. 117, no. 40, National Academy of Sciences, 2020, pp.
24764–70, doi:10.1073/pnas.2012043117.
short: E. Paris, Y. Tseng, E. Paerschke, W. Zhang, M.H. Upton, A. Efimenko, K. Rolfs,
D.E. McNally, L. Maurel, M. Naamneh, M. Caputo, V.N. Strocov, Z. Wang, D. Casa,
C.W. Schneider, E. Pomjakushina, K. Wohlfeld, M. Radovic, T. Schmitt, Proceedings
of the National Academy of Sciences of the United States of America 117 (2020)
24764–24770.
date_created: 2020-10-25T23:01:17Z
date_published: 2020-10-06T00:00:00Z
date_updated: 2023-08-22T12:11:52Z
day: '06'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1073/pnas.2012043117
ec_funded: 1
external_id:
arxiv:
- '2009.12262'
isi:
- '000579059100029'
pmid:
- '32958669'
file:
- access_level: open_access
checksum: 1638fa36b442e2868576c6dd7d6dc505
content_type: application/pdf
creator: cziletti
date_created: 2020-10-28T11:53:12Z
date_updated: 2020-10-28T11:53:12Z
file_id: '8715'
file_name: 2020_PNAS_Paris.pdf
file_size: 1176522
relation: main_file
success: 1
file_date_updated: 2020-10-28T11:53:12Z
has_accepted_license: '1'
intvolume: ' 117'
isi: 1
issue: '40'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '10'
oa: 1
oa_version: Published Version
page: 24764-24770
pmid: 1
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Proceedings of the National Academy of Sciences of the United States
of America
publication_identifier:
eissn:
- '10916490'
issn:
- '00278424'
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Strain engineering of the charge and spin-orbital interactions in Sr2IrO4
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 117
year: '2020'
...
---
_id: '7968'
abstract:
- lang: eng
text: Organic materials are known to feature long spin-diffusion times, originating
in a generally small spin–orbit coupling observed in these systems. From that
perspective, chiral molecules acting as efficient spin selectors pose a puzzle
that attracted a lot of attention in recent years. Here, we revisit the physical
origins of chiral-induced spin selectivity (CISS) and propose a simple analytic
minimal model to describe it. The model treats a chiral molecule as an anisotropic
wire with molecular dipole moments aligned arbitrarily with respect to the wire’s
axes and is therefore quite general. Importantly, it shows that the helical structure
of the molecule is not necessary to observe CISS and other chiral nonhelical molecules
can also be considered as potential candidates for the CISS effect. We also show
that the suggested simple model captures the main characteristics of CISS observed
in the experiment, without the need for additional constraints employed in the
previous studies. The results pave the way for understanding other related physical
phenomena where the CISS effect plays an essential role.
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Yossi
full_name: Paltiel, Yossi
last_name: Paltiel
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Ghazaryan A, Paltiel Y, Lemeshko M. Analytic model of chiral-induced spin selectivity.
The Journal of Physical Chemistry C. 2020;124(21):11716-11721. doi:10.1021/acs.jpcc.0c02584
apa: Ghazaryan, A., Paltiel, Y., & Lemeshko, M. (2020). Analytic model of chiral-induced
spin selectivity. The Journal of Physical Chemistry C. American Chemical
Society. https://doi.org/10.1021/acs.jpcc.0c02584
chicago: Ghazaryan, Areg, Yossi Paltiel, and Mikhail Lemeshko. “Analytic Model of
Chiral-Induced Spin Selectivity.” The Journal of Physical Chemistry C.
American Chemical Society, 2020. https://doi.org/10.1021/acs.jpcc.0c02584.
ieee: A. Ghazaryan, Y. Paltiel, and M. Lemeshko, “Analytic model of chiral-induced
spin selectivity,” The Journal of Physical Chemistry C, vol. 124, no. 21.
American Chemical Society, pp. 11716–11721, 2020.
ista: Ghazaryan A, Paltiel Y, Lemeshko M. 2020. Analytic model of chiral-induced
spin selectivity. The Journal of Physical Chemistry C. 124(21), 11716–11721.
mla: Ghazaryan, Areg, et al. “Analytic Model of Chiral-Induced Spin Selectivity.”
The Journal of Physical Chemistry C, vol. 124, no. 21, American Chemical
Society, 2020, pp. 11716–21, doi:10.1021/acs.jpcc.0c02584.
short: A. Ghazaryan, Y. Paltiel, M. Lemeshko, The Journal of Physical Chemistry
C 124 (2020) 11716–11721.
date_created: 2020-06-16T14:29:59Z
date_published: 2020-05-04T00:00:00Z
date_updated: 2023-09-05T12:07:15Z
day: '04'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1021/acs.jpcc.0c02584
ec_funded: 1
external_id:
isi:
- '000614616200006'
file:
- access_level: open_access
checksum: 25932bb1d0b0a955be0bea4d17facd49
content_type: application/pdf
creator: kschuh
date_created: 2020-10-20T14:39:47Z
date_updated: 2020-10-20T14:39:47Z
file_id: '8683'
file_name: 2020_PhysChemC_Ghazaryan.pdf
file_size: 1543429
relation: main_file
success: 1
file_date_updated: 2020-10-20T14:39:47Z
has_accepted_license: '1'
intvolume: ' 124'
isi: 1
issue: '21'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 11716-11721
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: The Journal of Physical Chemistry C
publication_identifier:
eissn:
- 1932-7455
issn:
- 1932-7447
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Analytic model of chiral-induced spin selectivity
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 124
year: '2020'
...
---
_id: '8588'
abstract:
- lang: eng
text: Dipolar (or spatially indirect) excitons (IXs) in semiconductor double quantum
well (DQW) subjected to an electric field are neutral species with a dipole moment
oriented perpendicular to the DQW plane. Here, we theoretically study interactions
between IXs in stacked DQW bilayers, where the dipolar coupling can be either
attractive or repulsive depending on the relative positions of the particles.
By using microscopic band structure calculations to determine the electronic states
forming the excitons, we show that the attractive dipolar interaction between
stacked IXs deforms their electronic wave function, thereby increasing the inter-DQW
interaction energy and making the IX even more electrically polarizable. Many-particle
interaction effects are addressed by considering the coupling between a single
IX in one of the DQWs to a cloud of IXs in the other DQW, which is modeled either
as a closed-packed lattice or as a continuum IX fluid. We find that the lattice
model yields IX interlayer binding energies decreasing with increasing lattice
density. This behavior is due to the dominating role of the intra-DQW dipolar
repulsion, which prevents more than one exciton from entering the attractive region
of the inter-DQW coupling. Finally, both models shows that the single IX distorts
the distribution of IXs in the adjacent DQW, thus inducing the formation of an
IX dipolar polaron (dipolaron). While the interlayer binding energy reduces with
IX density for lattice dipolarons, the continuous polaron model predicts a nonmonotonous
dependence on density in semiquantitative agreement with a recent experimental
study [cf. Hubert et al., Phys. Rev. X 9, 021026 (2019)].
acknowledgement: "We thank W. Kaganer for discussions and for comment on the manuscript.
We acknowledge the financial support from the German-Israeli Foundation (GIF), grant
agreement I-1277-303.10/2014. M.L. acknowledges support by the Austrian Science
Fund (FWF), under project No. P29902-N27, and by the European Research Council (ERC)
Starting Grant No. 801770 (ANGULON). A.G. acknowledges support by the European Unions
Horizon 2020 research and innovation\r\nprogram under the Marie Skodowska-Curie
grant agreement No 754411. P.V.S acknowledges financial support\r\nfrom the Deutsche
Forschungsgemeinschaft (DFG) under\r\nProject No. SA 598/12-1."
article_number: '045307'
article_processing_charge: No
article_type: original
author:
- first_name: C.
full_name: Hubert, C.
last_name: Hubert
- first_name: K.
full_name: Cohen, K.
last_name: Cohen
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: R.
full_name: Rapaport, R.
last_name: Rapaport
- first_name: P. V.
full_name: Santos, P. V.
last_name: Santos
citation:
ama: Hubert C, Cohen K, Ghazaryan A, Lemeshko M, Rapaport R, Santos PV. Attractive
interactions, molecular complexes, and polarons in coupled dipolar exciton fluids.
Physical Review B. 2020;102(4). doi:10.1103/physrevb.102.045307
apa: Hubert, C., Cohen, K., Ghazaryan, A., Lemeshko, M., Rapaport, R., & Santos,
P. V. (2020). Attractive interactions, molecular complexes, and polarons in coupled
dipolar exciton fluids. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.102.045307
chicago: Hubert, C., K. Cohen, Areg Ghazaryan, Mikhail Lemeshko, R. Rapaport, and
P. V. Santos. “Attractive Interactions, Molecular Complexes, and Polarons in Coupled
Dipolar Exciton Fluids.” Physical Review B. American Physical Society,
2020. https://doi.org/10.1103/physrevb.102.045307.
ieee: C. Hubert, K. Cohen, A. Ghazaryan, M. Lemeshko, R. Rapaport, and P. V. Santos,
“Attractive interactions, molecular complexes, and polarons in coupled dipolar
exciton fluids,” Physical Review B, vol. 102, no. 4. American Physical
Society, 2020.
ista: Hubert C, Cohen K, Ghazaryan A, Lemeshko M, Rapaport R, Santos PV. 2020. Attractive
interactions, molecular complexes, and polarons in coupled dipolar exciton fluids.
Physical Review B. 102(4), 045307.
mla: Hubert, C., et al. “Attractive Interactions, Molecular Complexes, and Polarons
in Coupled Dipolar Exciton Fluids.” Physical Review B, vol. 102, no. 4,
045307, American Physical Society, 2020, doi:10.1103/physrevb.102.045307.
short: C. Hubert, K. Cohen, A. Ghazaryan, M. Lemeshko, R. Rapaport, P.V. Santos,
Physical Review B 102 (2020).
date_created: 2020-09-30T10:33:43Z
date_published: 2020-07-21T00:00:00Z
date_updated: 2023-09-05T12:12:10Z
day: '21'
department:
- _id: MiLe
doi: 10.1103/physrevb.102.045307
ec_funded: 1
external_id:
arxiv:
- '1910.06015'
isi:
- '000550579100004'
intvolume: ' 102'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1910.06015
month: '07'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Attractive interactions, molecular complexes, and polarons in coupled dipolar
exciton fluids
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 102
year: '2020'
...
---
_id: '8769'
abstract:
- lang: eng
text: One of the hallmarks of quantum statistics, tightly entwined with the concept
of topological phases of matter, is the prediction of anyons. Although anyons
are predicted to be realized in certain fractional quantum Hall systems, they
have not yet been unambiguously detected in experiment. Here we introduce a simple
quantum impurity model, where bosonic or fermionic impurities turn into anyons
as a consequence of their interaction with the surrounding many-particle bath.
A cloud of phonons dresses each impurity in such a way that it effectively attaches
fluxes or vortices to it and thereby converts it into an Abelian anyon. The corresponding
quantum impurity model, first, provides a different approach to the numerical
solution of the many-anyon problem, along with a concrete perspective of anyons
as emergent quasiparticles built from composite bosons or fermions. More importantly,
the model paves the way toward realizing anyons using impurities in crystal lattices
as well as ultracold gases. In particular, we consider two heavy electrons interacting
with a two-dimensional lattice crystal in a magnetic field, and show that when
the impurity-bath system is rotated at the cyclotron frequency, impurities behave
as anyons as a consequence of the angular momentum exchange between the impurities
and the bath. A possible experimental realization is proposed by identifying the
statistics parameter in terms of the mean-square distance of the impurities and
the magnetization of the impurity-bath system, both of which are accessible to
experiment. Another proposed application is impurities immersed in a two-dimensional
weakly interacting Bose gas.
acknowledgement: "We are grateful to M. Correggi, A. Deuchert, and P. Schmelcher for
valuable discussions. We also thank the anonymous referees for helping to clarify
a few important points in the experimental realization. A.G. acknowledges support
by the European Unions Horizon 2020 research and innovation program under the Marie
Skłodowska-Curie grant agreement\r\nNo 754411. D.L. acknowledges financial support
from the Goran Gustafsson Foundation (grant no. 1804) and LMU Munich. R.S., M.L.,
and N.R. gratefully acknowledge financial support by the European Research Council
(ERC) under the European Union’s Horizon 2020 research and innovation programme
(grant agreements No 694227, No 801770, and No 758620, respectively)."
article_number: '144109'
article_processing_charge: No
article_type: original
author:
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: D.
full_name: Lundholm, D.
last_name: Lundholm
- first_name: N.
full_name: Rougerie, N.
last_name: Rougerie
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Robert
full_name: Seiringer, Robert
id: 4AFD0470-F248-11E8-B48F-1D18A9856A87
last_name: Seiringer
orcid: 0000-0002-6781-0521
citation:
ama: Yakaboylu E, Ghazaryan A, Lundholm D, Rougerie N, Lemeshko M, Seiringer R.
Quantum impurity model for anyons. Physical Review B. 2020;102(14). doi:10.1103/physrevb.102.144109
apa: Yakaboylu, E., Ghazaryan, A., Lundholm, D., Rougerie, N., Lemeshko, M., &
Seiringer, R. (2020). Quantum impurity model for anyons. Physical Review B.
American Physical Society. https://doi.org/10.1103/physrevb.102.144109
chicago: Yakaboylu, Enderalp, Areg Ghazaryan, D. Lundholm, N. Rougerie, Mikhail
Lemeshko, and Robert Seiringer. “Quantum Impurity Model for Anyons.” Physical
Review B. American Physical Society, 2020. https://doi.org/10.1103/physrevb.102.144109.
ieee: E. Yakaboylu, A. Ghazaryan, D. Lundholm, N. Rougerie, M. Lemeshko, and R.
Seiringer, “Quantum impurity model for anyons,” Physical Review B, vol.
102, no. 14. American Physical Society, 2020.
ista: Yakaboylu E, Ghazaryan A, Lundholm D, Rougerie N, Lemeshko M, Seiringer R.
2020. Quantum impurity model for anyons. Physical Review B. 102(14), 144109.
mla: Yakaboylu, Enderalp, et al. “Quantum Impurity Model for Anyons.” Physical
Review B, vol. 102, no. 14, 144109, American Physical Society, 2020, doi:10.1103/physrevb.102.144109.
short: E. Yakaboylu, A. Ghazaryan, D. Lundholm, N. Rougerie, M. Lemeshko, R. Seiringer,
Physical Review B 102 (2020).
date_created: 2020-11-18T07:34:17Z
date_published: 2020-10-01T00:00:00Z
date_updated: 2023-09-05T12:12:30Z
day: '01'
department:
- _id: MiLe
- _id: RoSe
doi: 10.1103/physrevb.102.144109
ec_funded: 1
external_id:
arxiv:
- '1912.07890'
isi:
- '000582563300001'
intvolume: ' 102'
isi: 1
issue: '14'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1912.07890
month: '10'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum impurity model for anyons
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 102
year: '2020'
...
---
_id: '8587'
abstract:
- lang: eng
text: Inspired by the possibility to experimentally manipulate and enhance chemical
reactivity in helium nanodroplets, we investigate the effective interaction and
the resulting correlations between two diatomic molecules immersed in a bath of
bosons. By analogy with the bipolaron, we introduce the biangulon quasiparticle
describing two rotating molecules that align with respect to each other due to
the effective attractive interaction mediated by the excitations of the bath.
We study this system in different parameter regimes and apply several theoretical
approaches to describe its properties. Using a Born–Oppenheimer approximation,
we investigate the dependence of the effective intermolecular interaction on the
rotational state of the two molecules. In the strong-coupling regime, a product-state
ansatz shows that the molecules tend to have a strong alignment in the ground
state. To investigate the system in the weak-coupling regime, we apply a one-phonon
excitation variational ansatz, which allows us to access the energy spectrum.
In comparison to the angulon quasiparticle, the biangulon shows shifted angulon
instabilities and an additional spectral instability, where resonant angular momentum
transfer between the molecules and the bath takes place. These features are proposed
as an experimentally observable signature for the formation of the biangulon quasiparticle.
Finally, by using products of single angulon and bare impurity wave functions
as basis states, we introduce a diagonalization scheme that allows us to describe
the transition from two separated angulons to a biangulon as a function of the
distance between the two molecules.
acknowledgement: We are grateful to Areg Ghazaryan for valuable discussions. M.L.
acknowledges support from the Austrian Science Fund (FWF) under Project No. P29902-N27
and from the European Research Council (ERC) Starting Grant No. 801770 (ANGULON).
G.B. acknowledges support from the Austrian Science Fund (FWF) under Project No.
M2461-N27. A.D. acknowledges funding from the European Union’s Horizon 2020 research
and innovation programme under the European Research Council (ERC) Grant Agreement
No. 694227 and under the Marie Sklodowska-Curie Grant Agreement No. 836146. R.S.
was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)
under Germany’s Excellence Strategy – EXC-2111 – 390814868.
article_number: '164302'
article_processing_charge: No
article_type: original
author:
- first_name: Xiang
full_name: Li, Xiang
id: 4B7E523C-F248-11E8-B48F-1D18A9856A87
last_name: Li
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Richard
full_name: Schmidt, Richard
last_name: Schmidt
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Andreas
full_name: Deuchert, Andreas
id: 4DA65CD0-F248-11E8-B48F-1D18A9856A87
last_name: Deuchert
orcid: 0000-0003-3146-6746
citation:
ama: Li X, Yakaboylu E, Bighin G, Schmidt R, Lemeshko M, Deuchert A. Intermolecular
forces and correlations mediated by a phonon bath. The Journal of Chemical
Physics. 2020;152(16). doi:10.1063/1.5144759
apa: Li, X., Yakaboylu, E., Bighin, G., Schmidt, R., Lemeshko, M., & Deuchert,
A. (2020). Intermolecular forces and correlations mediated by a phonon bath. The
Journal of Chemical Physics. AIP Publishing. https://doi.org/10.1063/1.5144759
chicago: Li, Xiang, Enderalp Yakaboylu, Giacomo Bighin, Richard Schmidt, Mikhail
Lemeshko, and Andreas Deuchert. “Intermolecular Forces and Correlations Mediated
by a Phonon Bath.” The Journal of Chemical Physics. AIP Publishing, 2020.
https://doi.org/10.1063/1.5144759.
ieee: X. Li, E. Yakaboylu, G. Bighin, R. Schmidt, M. Lemeshko, and A. Deuchert,
“Intermolecular forces and correlations mediated by a phonon bath,” The Journal
of Chemical Physics, vol. 152, no. 16. AIP Publishing, 2020.
ista: Li X, Yakaboylu E, Bighin G, Schmidt R, Lemeshko M, Deuchert A. 2020. Intermolecular
forces and correlations mediated by a phonon bath. The Journal of Chemical Physics.
152(16), 164302.
mla: Li, Xiang, et al. “Intermolecular Forces and Correlations Mediated by a Phonon
Bath.” The Journal of Chemical Physics, vol. 152, no. 16, 164302, AIP Publishing,
2020, doi:10.1063/1.5144759.
short: X. Li, E. Yakaboylu, G. Bighin, R. Schmidt, M. Lemeshko, A. Deuchert, The
Journal of Chemical Physics 152 (2020).
date_created: 2020-09-30T10:33:17Z
date_published: 2020-04-27T00:00:00Z
date_updated: 2023-09-07T13:16:42Z
day: '27'
department:
- _id: MiLe
- _id: RoSe
doi: 10.1063/1.5144759
ec_funded: 1
external_id:
arxiv:
- '1912.02658'
isi:
- '000530448300001'
intvolume: ' 152'
isi: 1
issue: '16'
keyword:
- Physical and Theoretical Chemistry
- General Physics and Astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1912.02658
month: '04'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
- _id: 26986C82-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02641
name: A path-integral approach to composite impurities
- _id: 25C6DC12-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '694227'
name: Analysis of quantum many-body systems
publication: The Journal of Chemical Physics
publication_identifier:
eissn:
- 1089-7690
issn:
- 0021-9606
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
related_material:
record:
- id: '8958'
relation: dissertation_contains
status: public
status: public
title: Intermolecular forces and correlations mediated by a phonon bath
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 152
year: '2020'
...
---
_id: '8644'
abstract:
- lang: eng
text: Determining the phase diagram of systems consisting of smaller subsystems
'connected' via a tunable coupling is a challenging task relevant for a variety
of physical settings. A general question is whether new phases, not present in
the uncoupled limit, may arise. We use machine learning and a suitable quasidistance
between different points of the phase diagram to study layered spin models, in
which the spin variables constituting each of the uncoupled systems (to which
we refer as layers) are coupled to each other via an interlayer coupling. In such
systems, in general, composite order parameters involving spins of different layers
may emerge as a consequence of the interlayer coupling. We focus on the layered
Ising and Ashkin–Teller models as a paradigmatic case study, determining their
phase diagram via the application of a machine learning algorithm to the Monte
Carlo data. Remarkably our technique is able to correctly characterize all the
system phases also in the case of hidden order parameters, i.e. order parameters
whose expression in terms of the microscopic configurations would require additional
preprocessing of the data fed to the algorithm. We correctly retrieve the three
known phases of the Ashkin–Teller model with ferromagnetic couplings, including
the phase described by a composite order parameter. For the bilayer and trilayer
Ising models the phases we find are only the ferromagnetic and the paramagnetic
ones. Within the approach we introduce, owing to the construction of convolutional
neural networks, naturally suitable for layered image-like data with arbitrary
number of layers, no preprocessing of the Monte Carlo data is needed, also with
regard to its spatial structure. The physical meaning of our results is discussed
and compared with analytical data, where available. Yet, the method can be used
without any a priori knowledge of the phases one seeks to find and can be applied
to other models and structures.
acknowledgement: We thank Gesualdo Delfino, Michele Fabrizio, Piero Ferrarese, Robert
Konik, Christoph Lampert and Mikhail Lemeshko for stimulating discussions at various
stages of this work. WR has received funding from the EU Horizon 2020 program under
the Marie Skłodowska-Curie Grant Agreement No. 665385 and is a recipient of a DOC
Fellowship of the Austrian Academy of Sciences. GB acknowledges support from the
Austrian Science Fund (FWF), under project No. M2641-N27. ND acknowledges support
by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via Collaborative
Research Center SFB 1225 (ISOQUANT)--project-id 273811115--and under Germany's Excellence
Strategy 'EXC-2181/1-390900948' (the Heidelberg STRUCTURES Excellence Cluster).
article_number: '093026'
article_processing_charge: No
article_type: original
author:
- first_name: Wojciech
full_name: Rzadkowski, Wojciech
id: 48C55298-F248-11E8-B48F-1D18A9856A87
last_name: Rzadkowski
orcid: 0000-0002-1106-4419
- first_name: N
full_name: Defenu, N
last_name: Defenu
- first_name: S
full_name: Chiacchiera, S
last_name: Chiacchiera
- first_name: A
full_name: Trombettoni, A
last_name: Trombettoni
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
citation:
ama: Rzadkowski W, Defenu N, Chiacchiera S, Trombettoni A, Bighin G. Detecting composite
orders in layered models via machine learning. New Journal of Physics.
2020;22(9). doi:10.1088/1367-2630/abae44
apa: Rzadkowski, W., Defenu, N., Chiacchiera, S., Trombettoni, A., & Bighin,
G. (2020). Detecting composite orders in layered models via machine learning.
New Journal of Physics. IOP Publishing. https://doi.org/10.1088/1367-2630/abae44
chicago: Rzadkowski, Wojciech, N Defenu, S Chiacchiera, A Trombettoni, and Giacomo
Bighin. “Detecting Composite Orders in Layered Models via Machine Learning.” New
Journal of Physics. IOP Publishing, 2020. https://doi.org/10.1088/1367-2630/abae44.
ieee: W. Rzadkowski, N. Defenu, S. Chiacchiera, A. Trombettoni, and G. Bighin, “Detecting
composite orders in layered models via machine learning,” New Journal of Physics,
vol. 22, no. 9. IOP Publishing, 2020.
ista: Rzadkowski W, Defenu N, Chiacchiera S, Trombettoni A, Bighin G. 2020. Detecting
composite orders in layered models via machine learning. New Journal of Physics.
22(9), 093026.
mla: Rzadkowski, Wojciech, et al. “Detecting Composite Orders in Layered Models
via Machine Learning.” New Journal of Physics, vol. 22, no. 9, 093026,
IOP Publishing, 2020, doi:10.1088/1367-2630/abae44.
short: W. Rzadkowski, N. Defenu, S. Chiacchiera, A. Trombettoni, G. Bighin, New
Journal of Physics 22 (2020).
date_created: 2020-10-11T22:01:14Z
date_published: 2020-09-01T00:00:00Z
date_updated: 2023-09-07T13:44:16Z
day: '01'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1088/1367-2630/abae44
ec_funded: 1
external_id:
isi:
- '000573298000001'
file:
- access_level: open_access
checksum: c9238fff422e7a957c3a0d559f756b3a
content_type: application/pdf
creator: dernst
date_created: 2020-10-12T12:18:47Z
date_updated: 2020-10-12T12:18:47Z
file_id: '8650'
file_name: 2020_NewJournalPhysics_Rzdkowski.pdf
file_size: 2725143
relation: main_file
success: 1
file_date_updated: 2020-10-12T12:18:47Z
has_accepted_license: '1'
intvolume: ' 22'
isi: 1
issue: '9'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
- _id: 05A235A0-7A3F-11EA-A408-12923DDC885E
grant_number: '25681'
name: Analytic and machine learning approaches to composite quantum impurities
- _id: 26986C82-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02641
name: A path-integral approach to composite impurities
publication: New Journal of Physics
publication_identifier:
issn:
- '13672630'
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
related_material:
record:
- id: '10759'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Detecting composite orders in layered models via machine learning
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 22
year: '2020'
...
---
_id: '8958'
abstract:
- lang: eng
text: "The oft-quoted dictum by Arthur Schawlow: ``A diatomic molecule has one atom
too many'' has been disavowed. Inspired by the possibility to experimentally manipulate
and enhance chemical reactivity in helium nanodroplets, we investigate the rotation
of coupled cold molecules in the presence of a many-body environment.\r\nIn this
thesis, we introduce new variational approaches to quantum impurities and apply
them to the Fröhlich polaron - a quasiparticle formed out of an electron (or other
point-like impurity) in a polar medium, and to the angulon - a quasiparticle formed
out of a rotating molecule in a bosonic bath.\r\nWith this theoretical toolbox,
we reveal the self-localization transition for the angulon quasiparticle. We show
that, unlike for polarons, self-localization of angulons occurs at finite impurity-bath
coupling already at the mean-field level. The transition is accompanied by the
spherical-symmetry breaking of the angulon ground state and a discontinuity in
the first derivative of the ground-state energy. Moreover, the type of symmetry
breaking is dictated by the symmetry of the microscopic impurity-bath interaction,
which leads to a number of distinct self-localized states. \r\nFor the system
containing multiple impurities, by analogy with the bipolaron, we introduce the
biangulon quasiparticle describing two rotating molecules that align with respect
to each other due to the effective attractive interaction mediated by the excitations
of the bath. We study this system from the strong-coupling regime to the weak
molecule-bath interaction regime. We show that the molecules tend to have a strong
alignment in the ground state, the biangulon shows shifted angulon instabilities
and an additional spectral instability, where resonant angular momentum transfer
between the molecules and the bath takes place. Finally, we introduce a diagonalization
scheme that allows us to describe the transition from two separated angulons to
a biangulon as a function of the distance between the two molecules."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Xiang
full_name: Li, Xiang
id: 4B7E523C-F248-11E8-B48F-1D18A9856A87
last_name: Li
citation:
ama: Li X. Rotation of coupled cold molecules in the presence of a many-body environment.
2020. doi:10.15479/AT:ISTA:8958
apa: Li, X. (2020). Rotation of coupled cold molecules in the presence of a many-body
environment. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:8958
chicago: Li, Xiang. “Rotation of Coupled Cold Molecules in the Presence of a Many-Body
Environment.” Institute of Science and Technology Austria, 2020. https://doi.org/10.15479/AT:ISTA:8958.
ieee: X. Li, “Rotation of coupled cold molecules in the presence of a many-body
environment,” Institute of Science and Technology Austria, 2020.
ista: Li X. 2020. Rotation of coupled cold molecules in the presence of a many-body
environment. Institute of Science and Technology Austria.
mla: Li, Xiang. Rotation of Coupled Cold Molecules in the Presence of a Many-Body
Environment. Institute of Science and Technology Austria, 2020, doi:10.15479/AT:ISTA:8958.
short: X. Li, Rotation of Coupled Cold Molecules in the Presence of a Many-Body
Environment, Institute of Science and Technology Austria, 2020.
date_created: 2020-12-21T09:44:30Z
date_published: 2020-12-21T00:00:00Z
date_updated: 2023-09-20T11:30:58Z
day: '21'
ddc:
- '539'
degree_awarded: PhD
department:
- _id: MiLe
doi: 10.15479/AT:ISTA:8958
ec_funded: 1
file:
- access_level: open_access
checksum: 3994c54a1241451d561db1d4f43bad30
content_type: application/pdf
creator: xli
date_created: 2020-12-22T10:55:56Z
date_updated: 2020-12-22T10:55:56Z
file_id: '8967'
file_name: THESIS_Xiang_Li.pdf
file_size: 3622305
relation: main_file
success: 1
- access_level: closed
checksum: 0954ecfc5554c05615c14de803341f00
content_type: application/x-zip-compressed
creator: xli
date_created: 2020-12-22T10:56:03Z
date_updated: 2020-12-30T07:18:03Z
file_id: '8968'
file_name: THESIS_Xiang_Li.zip
file_size: 4018859
relation: source_file
file_date_updated: 2020-12-30T07:18:03Z
has_accepted_license: '1'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
page: '125'
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 2688CF98-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '801770'
name: 'Angulon: physics and applications of a new quasiparticle'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '5886'
relation: part_of_dissertation
status: public
- id: '8587'
relation: part_of_dissertation
status: public
- id: '1120'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
title: Rotation of coupled cold molecules in the presence of a many-body environment
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2020'
...
---
_id: '7956'
abstract:
- lang: eng
text: When short-range attractions are combined with long-range repulsions in colloidal
particle systems, complex microphases can emerge. Here, we study a system of isotropic
particles, which can form lamellar structures or a disordered fluid phase when
temperature is varied. We show that, at equilibrium, the lamellar structure crystallizes,
while out of equilibrium, the system forms a variety of structures at different
shear rates and temperatures above melting. The shear-induced ordering is analyzed
by means of principal component analysis and artificial neural networks, which
are applied to data of reduced dimensionality. Our results reveal the possibility
of inducing ordering by shear, potentially providing a feasible route to the fabrication
of ordered lamellar structures from isotropic particles.
article_number: '204905'
article_processing_charge: No
article_type: original
author:
- first_name: J.
full_name: Pȩkalski, J.
last_name: Pȩkalski
- first_name: Wojciech
full_name: Rzadkowski, Wojciech
id: 48C55298-F248-11E8-B48F-1D18A9856A87
last_name: Rzadkowski
orcid: 0000-0002-1106-4419
- first_name: A. Z.
full_name: Panagiotopoulos, A. Z.
last_name: Panagiotopoulos
citation:
ama: 'Pȩkalski J, Rzadkowski W, Panagiotopoulos AZ. Shear-induced ordering in systems
with competing interactions: A machine learning study. The Journal of chemical
physics. 2020;152(20). doi:10.1063/5.0005194'
apa: 'Pȩkalski, J., Rzadkowski, W., & Panagiotopoulos, A. Z. (2020). Shear-induced
ordering in systems with competing interactions: A machine learning study. The
Journal of Chemical Physics. AIP Publishing. https://doi.org/10.1063/5.0005194'
chicago: 'Pȩkalski, J., Wojciech Rzadkowski, and A. Z. Panagiotopoulos. “Shear-Induced
Ordering in Systems with Competing Interactions: A Machine Learning Study.” The
Journal of Chemical Physics. AIP Publishing, 2020. https://doi.org/10.1063/5.0005194.'
ieee: 'J. Pȩkalski, W. Rzadkowski, and A. Z. Panagiotopoulos, “Shear-induced ordering
in systems with competing interactions: A machine learning study,” The Journal
of chemical physics, vol. 152, no. 20. AIP Publishing, 2020.'
ista: 'Pȩkalski J, Rzadkowski W, Panagiotopoulos AZ. 2020. Shear-induced ordering
in systems with competing interactions: A machine learning study. The Journal
of chemical physics. 152(20), 204905.'
mla: 'Pȩkalski, J., et al. “Shear-Induced Ordering in Systems with Competing Interactions:
A Machine Learning Study.” The Journal of Chemical Physics, vol. 152, no.
20, 204905, AIP Publishing, 2020, doi:10.1063/5.0005194.'
short: J. Pȩkalski, W. Rzadkowski, A.Z. Panagiotopoulos, The Journal of Chemical
Physics 152 (2020).
date_created: 2020-06-14T22:00:49Z
date_published: 2020-05-29T00:00:00Z
date_updated: 2024-02-28T13:00:28Z
day: '29'
department:
- _id: MiLe
doi: 10.1063/5.0005194
ec_funded: 1
external_id:
arxiv:
- '2002.07294'
isi:
- '000537900300001'
intvolume: ' 152'
isi: 1
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1063/5.0005194
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '665385'
name: International IST Doctoral Program
publication: The Journal of chemical physics
publication_identifier:
eissn:
- '10897690'
publication_status: published
publisher: AIP Publishing
quality_controlled: '1'
related_material:
record:
- id: '10759'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 'Shear-induced ordering in systems with competing interactions: A machine learning
study'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 152
year: '2020'
...
---
_id: '7428'
abstract:
- lang: eng
text: In the superconducting regime of FeTe(1−x)Sex, there exist two types of vortices
which are distinguished by the presence or absence of zero-energy states in their
core. To understand their origin, we examine the interplay of Zeeman coupling
and superconducting pairings in three-dimensional metals with band inversion.
Weak Zeeman fields are found to suppress intraorbital spin-singlet pairing, known
to localize the states at the ends of the vortices on the surface. On the other
hand, an orbital-triplet pairing is shown to be stable against Zeeman interactions,
but leads to delocalized zero-energy Majorana modes which extend through the vortex.
In contrast, the finite-energy vortex modes remain localized at the vortex ends
even when the pairing is of orbital-triplet form. Phenomenologically, this manifests
as an observed disappearance of zero-bias peaks within the cores of topological
vortices upon an increase of the applied magnetic field. The presence of magnetic
impurities in FeTe(1−x)Sex, which are attracted to the vortices, would lead to
such Zeeman-induced delocalization of Majorana modes in a fraction of vortices
that capture a large enough number of magnetic impurities. Our results provide
an explanation for the dichotomy between topological and nontopological vortices
recently observed in FeTe(1−x)Sex.
article_number: '020504'
article_processing_charge: No
article_type: original
author:
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: P. L.S.
full_name: Lopes, P. L.S.
last_name: Lopes
- first_name: Pavan
full_name: Hosur, Pavan
last_name: Hosur
- first_name: Matthew J.
full_name: Gilbert, Matthew J.
last_name: Gilbert
- first_name: Pouyan
full_name: Ghaemi, Pouyan
last_name: Ghaemi
citation:
ama: Ghazaryan A, Lopes PLS, Hosur P, Gilbert MJ, Ghaemi P. Effect of Zeeman coupling
on the Majorana vortex modes in iron-based topological superconductors. Physical
Review B. 2020;101(2). doi:10.1103/PhysRevB.101.020504
apa: Ghazaryan, A., Lopes, P. L. S., Hosur, P., Gilbert, M. J., & Ghaemi, P.
(2020). Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological
superconductors. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.101.020504
chicago: Ghazaryan, Areg, P. L.S. Lopes, Pavan Hosur, Matthew J. Gilbert, and Pouyan
Ghaemi. “Effect of Zeeman Coupling on the Majorana Vortex Modes in Iron-Based
Topological Superconductors.” Physical Review B. American Physical Society,
2020. https://doi.org/10.1103/PhysRevB.101.020504.
ieee: A. Ghazaryan, P. L. S. Lopes, P. Hosur, M. J. Gilbert, and P. Ghaemi, “Effect
of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors,”
Physical Review B, vol. 101, no. 2. American Physical Society, 2020.
ista: Ghazaryan A, Lopes PLS, Hosur P, Gilbert MJ, Ghaemi P. 2020. Effect of Zeeman
coupling on the Majorana vortex modes in iron-based topological superconductors.
Physical Review B. 101(2), 020504.
mla: Ghazaryan, Areg, et al. “Effect of Zeeman Coupling on the Majorana Vortex Modes
in Iron-Based Topological Superconductors.” Physical Review B, vol. 101,
no. 2, 020504, American Physical Society, 2020, doi:10.1103/PhysRevB.101.020504.
short: A. Ghazaryan, P.L.S. Lopes, P. Hosur, M.J. Gilbert, P. Ghaemi, Physical Review
B 101 (2020).
date_created: 2020-02-02T23:01:01Z
date_published: 2020-01-13T00:00:00Z
date_updated: 2024-02-28T13:11:13Z
day: '13'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.101.020504
external_id:
arxiv:
- '1907.02077'
isi:
- '000506843500001'
intvolume: ' 101'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1907.02077
month: '01'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- '24699969'
issn:
- '24699950'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological
superconductors
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 101
year: '2020'
...
---
_id: '8741'
abstract:
- lang: eng
text: "In ecology, climate and other fields, (sub)systems have been identified that
can transition into a qualitatively different state when a critical threshold
or tipping point in a driving process is crossed. An understanding of those tipping
elements is of great interest given the increasing influence of humans on the
biophysical Earth system. Complex interactions exist between tipping elements,
e.g. physical mechanisms connect subsystems of the climate system. Based on earlier
work on such coupled nonlinear systems, we systematically assessed the qualitative
long-term behaviour of interacting tipping elements. We developed an understanding
of the consequences of interactions\r\non the tipping behaviour allowing for tipping
cascades to emerge under certain conditions. The (narrative) application of\r\nthese
qualitative results to real-world examples of interacting tipping elements indicates
that tipping cascades with profound consequences may occur: the interacting Greenland
ice sheet and thermohaline ocean circulation might tip before the tipping points
of the isolated subsystems are crossed. The eutrophication of the first lake in
a lake chain might propagate through the following lakes without a crossing of
their individual critical nutrient input levels. The possibility of emerging cascading
tipping dynamics calls for the development of a unified theory of interacting
tipping elements and the quantitative analysis of interacting real-world tipping
elements."
acknowledgement: "V.K. thanks the German National Academic Foundation (Studienstiftung
des deutschen Volkes) for financial\r\nsupport. J.F.D. is grateful for financial
support by the Stordalen Foundation via the Planetary Boundary Research\r\nNetwork
(PB.net), the Earth League’s EarthDoc program and the European Research Council
Advanced Grant\r\nproject ERA (Earth Resilience in the Anthropocene). We are thankful
for support by the Leibniz Association\r\n(project DominoES).\r\nAcknowledgements.
This work has been performed in the context of the copan collaboration and the FutureLab
on Earth\r\nResilience in the Anthropocene at the Potsdam Institute for Climate
Impact Research. Furthermore, we acknowledge\r\ndiscussions with and helpful comments
by N. Wunderling, J. Heitzig and M. Wiedermann."
article_number: '200599'
article_processing_charge: No
article_type: original
author:
- first_name: Ann Kristin
full_name: Klose, Ann Kristin
last_name: Klose
- first_name: Volker
full_name: Karle, Volker
id: D7C012AE-D7ED-11E9-95E8-1EC5E5697425
last_name: Karle
orcid: 0000-0002-6963-0129
- first_name: Ricarda
full_name: Winkelmann, Ricarda
last_name: Winkelmann
- first_name: Jonathan F.
full_name: Donges, Jonathan F.
last_name: Donges
citation:
ama: 'Klose AK, Karle V, Winkelmann R, Donges JF. Emergence of cascading dynamics
in interacting tipping elements of ecology and climate: Cascading dynamics in
tipping elements. Royal Society Open Science. 2020;7(6). doi:10.1098/rsos.200599'
apa: 'Klose, A. K., Karle, V., Winkelmann, R., & Donges, J. F. (2020). Emergence
of cascading dynamics in interacting tipping elements of ecology and climate:
Cascading dynamics in tipping elements. Royal Society Open Science. The
Royal Society. https://doi.org/10.1098/rsos.200599'
chicago: 'Klose, Ann Kristin, Volker Karle, Ricarda Winkelmann, and Jonathan F.
Donges. “Emergence of Cascading Dynamics in Interacting Tipping Elements of Ecology
and Climate: Cascading Dynamics in Tipping Elements.” Royal Society Open Science.
The Royal Society, 2020. https://doi.org/10.1098/rsos.200599.'
ieee: 'A. K. Klose, V. Karle, R. Winkelmann, and J. F. Donges, “Emergence of cascading
dynamics in interacting tipping elements of ecology and climate: Cascading dynamics
in tipping elements,” Royal Society Open Science, vol. 7, no. 6. The Royal
Society, 2020.'
ista: 'Klose AK, Karle V, Winkelmann R, Donges JF. 2020. Emergence of cascading
dynamics in interacting tipping elements of ecology and climate: Cascading dynamics
in tipping elements. Royal Society Open Science. 7(6), 200599.'
mla: 'Klose, Ann Kristin, et al. “Emergence of Cascading Dynamics in Interacting
Tipping Elements of Ecology and Climate: Cascading Dynamics in Tipping Elements.”
Royal Society Open Science, vol. 7, no. 6, 200599, The Royal Society, 2020,
doi:10.1098/rsos.200599.'
short: A.K. Klose, V. Karle, R. Winkelmann, J.F. Donges, Royal Society Open Science
7 (2020).
date_created: 2020-11-08T23:01:25Z
date_published: 2020-06-01T00:00:00Z
date_updated: 2024-03-12T12:31:30Z
day: '01'
ddc:
- '530'
- '550'
department:
- _id: MiLe
doi: 10.1098/rsos.200599
external_id:
arxiv:
- '1910.12042'
isi:
- '000545625200001'
file:
- access_level: open_access
checksum: 5505c445de373bfd836eb4d3b48b1f37
content_type: application/pdf
creator: dernst
date_created: 2020-11-09T09:07:11Z
date_updated: 2020-11-09T09:07:11Z
file_id: '8748'
file_name: 2020_RoyalSocOpenScience_Klose.pdf
file_size: 1611485
relation: main_file
success: 1
file_date_updated: 2020-11-09T09:07:11Z
has_accepted_license: '1'
intvolume: ' 7'
isi: 1
issue: '6'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
publication: Royal Society Open Science
publication_identifier:
eissn:
- '20545703'
publication_status: published
publisher: The Royal Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Emergence of cascading dynamics in interacting tipping elements of ecology
and climate: Cascading dynamics in tipping elements'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2020'
...
---
_id: '6940'
abstract:
- lang: eng
text: "We study the effect of a linear tunneling coupling between two-dimensional
systems, each separately\r\nexhibiting the topological Berezinskii-Kosterlitz-Thouless
(BKT) transition. In the uncoupled limit, there\r\nare two phases: one where the
one-body correlation functions are algebraically decaying and the other with\r\nexponential
decay. When the linear coupling is turned on, a third BKT-paired phase emerges,
in which one-body correlations are exponentially decaying, while two-body correlation
functions exhibit power-law\r\ndecay. We perform numerical simulations in the
paradigmatic case of two coupled XY models at finite\r\ntemperature, finding evidences
that for any finite value of the interlayer coupling, the BKT-paired phase is\r\npresent.
We provide a picture of the phase diagram using a renormalization group approach."
acknowledgement: "We thank S. Chiacchiera, G. Delfino, N. Dupuis, T. Enss, M. Fabrizio
and G. Gori for many stimulating discussions.\r\nG.B. acknowledges support from
the Austrian Science Fund (FWF), under project No. M2461-N27. N.D. acknowledges\r\nsupport
from Deutsche Forschungsgemeinschaft (DFG) under Germany’s Excellence Strategy EXC-2181/1
- 390900948 (the Heidelberg STRUCTURES Excellence Cluster) and from the DFG Collaborative
Research Centre “SFB 1225 ISOQUANT”. Support from the CNR/MTA Italy-Hungary 2019-2021
Joint Project “Strongly interacting systems in confined geometries” is gratefully
acknowledged."
article_number: '100601'
article_processing_charge: No
article_type: original
author:
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Nicolò
full_name: Defenu, Nicolò
last_name: Defenu
- first_name: István
full_name: Nándori, István
last_name: Nándori
- first_name: Luca
full_name: Salasnich, Luca
last_name: Salasnich
- first_name: Andrea
full_name: Trombettoni, Andrea
last_name: Trombettoni
citation:
ama: Bighin G, Defenu N, Nándori I, Salasnich L, Trombettoni A. Berezinskii-Kosterlitz-Thouless
paired phase in coupled XY models. Physical Review Letters. 2019;123(10).
doi:10.1103/physrevlett.123.100601
apa: Bighin, G., Defenu, N., Nándori, I., Salasnich, L., & Trombettoni, A. (2019).
Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.123.100601
chicago: Bighin, Giacomo, Nicolò Defenu, István Nándori, Luca Salasnich, and Andrea
Trombettoni. “Berezinskii-Kosterlitz-Thouless Paired Phase in Coupled XY Models.”
Physical Review Letters. American Physical Society, 2019. https://doi.org/10.1103/physrevlett.123.100601.
ieee: G. Bighin, N. Defenu, I. Nándori, L. Salasnich, and A. Trombettoni, “Berezinskii-Kosterlitz-Thouless
paired phase in coupled XY models,” Physical Review Letters, vol. 123,
no. 10. American Physical Society, 2019.
ista: Bighin G, Defenu N, Nándori I, Salasnich L, Trombettoni A. 2019. Berezinskii-Kosterlitz-Thouless
paired phase in coupled XY models. Physical Review Letters. 123(10), 100601.
mla: Bighin, Giacomo, et al. “Berezinskii-Kosterlitz-Thouless Paired Phase in Coupled
XY Models.” Physical Review Letters, vol. 123, no. 10, 100601, American
Physical Society, 2019, doi:10.1103/physrevlett.123.100601.
short: G. Bighin, N. Defenu, I. Nándori, L. Salasnich, A. Trombettoni, Physical
Review Letters 123 (2019).
date_created: 2019-10-14T06:31:13Z
date_published: 2019-09-06T00:00:00Z
date_updated: 2023-08-30T06:57:53Z
day: '06'
department:
- _id: MiLe
doi: 10.1103/physrevlett.123.100601
external_id:
arxiv:
- '1907.06253'
isi:
- '000483587200004'
intvolume: ' 123'
isi: 1
issue: '10'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1907.06253
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 26986C82-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: M02641
name: A path-integral approach to composite impurities
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
link:
- description: News auf IST Website
relation: press_release
url: https://ist.ac.at/en/news/new-form-of-magnetism-found/
scopus_import: '1'
status: public
title: Berezinskii-Kosterlitz-Thouless paired phase in coupled XY models
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 123
year: '2019'
...
---
_id: '6955'
abstract:
- lang: eng
text: We study few-body bound states of charged particles subject to attractive
zero-range/short-range plus repulsive Coulomb interparticle forces. The characteristic
length scales of the system at zero energy are set by the Coulomb length scale
D and the Coulomb-modified effective range r eff. We study shallow bound states
of charged particles with D >> r eff and show that these systems obey universal
scaling laws different from neutral particles. An accurate description of these
states requires both the Coulomb-modified scattering length and the effective
range unless the Coulomb interaction is very weak (D -> ). Our findings are relevant
for bound states whose spatial extent is significantly larger than the range of
the attractive potential. These states enjoy universality – their character is
independent of the shape of the short-range potential.
article_number: '135016'
article_processing_charge: No
article_type: original
author:
- first_name: C.H.
full_name: Schmickler, C.H.
last_name: Schmickler
- first_name: H.-W.
full_name: Hammer, H.-W.
last_name: Hammer
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Schmickler CH, Hammer H-W, Volosniev A. Universal physics of bound states of
a few charged particles. Physics Letters B. 2019;798. doi:10.1016/j.physletb.2019.135016
apa: Schmickler, C. H., Hammer, H.-W., & Volosniev, A. (2019). Universal physics
of bound states of a few charged particles. Physics Letters B. Elsevier.
https://doi.org/10.1016/j.physletb.2019.135016
chicago: Schmickler, C.H., H.-W. Hammer, and Artem Volosniev. “Universal Physics
of Bound States of a Few Charged Particles.” Physics Letters B. Elsevier,
2019. https://doi.org/10.1016/j.physletb.2019.135016.
ieee: C. H. Schmickler, H.-W. Hammer, and A. Volosniev, “Universal physics of bound
states of a few charged particles,” Physics Letters B, vol. 798. Elsevier,
2019.
ista: Schmickler CH, Hammer H-W, Volosniev A. 2019. Universal physics of bound states
of a few charged particles. Physics Letters B. 798, 135016.
mla: Schmickler, C. H., et al. “Universal Physics of Bound States of a Few Charged
Particles.” Physics Letters B, vol. 798, 135016, Elsevier, 2019, doi:10.1016/j.physletb.2019.135016.
short: C.H. Schmickler, H.-W. Hammer, A. Volosniev, Physics Letters B 798 (2019).
date_created: 2019-10-18T18:33:32Z
date_published: 2019-11-10T00:00:00Z
date_updated: 2023-08-30T07:06:42Z
day: '10'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1016/j.physletb.2019.135016
external_id:
arxiv:
- '1904.00913'
isi:
- '000494939000086'
file:
- access_level: open_access
checksum: d27f983b34ea7dafdf356afbf9472fbf
content_type: application/pdf
creator: dernst
date_created: 2019-10-25T12:47:04Z
date_updated: 2020-07-14T12:47:46Z
file_id: '6974'
file_name: 2019_PhysicsLettersB_Schmickler.pdf
file_size: 528362
relation: main_file
file_date_updated: 2020-07-14T12:47:46Z
has_accepted_license: '1'
intvolume: ' 798'
isi: 1
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
publication: Physics Letters B
publication_identifier:
issn:
- 0370-2693
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Universal physics of bound states of a few charged particles
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 798
year: '2019'
...
---
_id: '5886'
abstract:
- lang: eng
text: Problems involving quantum impurities, in which one or a few particles are
interacting with a macroscopic environment, represent a pervasive paradigm, spanning
across atomic, molecular, and condensed-matter physics. In this paper we introduce
new variational approaches to quantum impurities and apply them to the Fröhlich
polaron–a quasiparticle formed out of an electron (or other point-like impurity)
in a polar medium, and to the angulon–a quasiparticle formed out of a rotating
molecule in a bosonic bath. We benchmark these approaches against established
theories, evaluating their accuracy as a function of the impurity-bath coupling.
article_processing_charge: No
author:
- first_name: Xiang
full_name: Li, Xiang
id: 4B7E523C-F248-11E8-B48F-1D18A9856A87
last_name: Li
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: 'Li X, Bighin G, Yakaboylu E, Lemeshko M. Variational approaches to quantum
impurities: from the Fröhlich polaron to the angulon. Molecular Physics.
2019. doi:10.1080/00268976.2019.1567852'
apa: 'Li, X., Bighin, G., Yakaboylu, E., & Lemeshko, M. (2019). Variational
approaches to quantum impurities: from the Fröhlich polaron to the angulon. Molecular
Physics. Taylor and Francis. https://doi.org/10.1080/00268976.2019.1567852'
chicago: 'Li, Xiang, Giacomo Bighin, Enderalp Yakaboylu, and Mikhail Lemeshko. “Variational
Approaches to Quantum Impurities: From the Fröhlich Polaron to the Angulon.” Molecular
Physics. Taylor and Francis, 2019. https://doi.org/10.1080/00268976.2019.1567852.'
ieee: 'X. Li, G. Bighin, E. Yakaboylu, and M. Lemeshko, “Variational approaches
to quantum impurities: from the Fröhlich polaron to the angulon,” Molecular
Physics. Taylor and Francis, 2019.'
ista: 'Li X, Bighin G, Yakaboylu E, Lemeshko M. 2019. Variational approaches to
quantum impurities: from the Fröhlich polaron to the angulon. Molecular Physics.'
mla: 'Li, Xiang, et al. “Variational Approaches to Quantum Impurities: From the
Fröhlich Polaron to the Angulon.” Molecular Physics, Taylor and Francis,
2019, doi:10.1080/00268976.2019.1567852.'
short: X. Li, G. Bighin, E. Yakaboylu, M. Lemeshko, Molecular Physics (2019).
date_created: 2019-01-27T22:59:10Z
date_published: 2019-01-18T00:00:00Z
date_updated: 2023-09-07T13:16:42Z
day: '18'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1080/00268976.2019.1567852
ec_funded: 1
external_id:
isi:
- '000474641400008'
file:
- access_level: open_access
checksum: 178964744b636a6f036372f4f090a657
content_type: application/pdf
creator: dernst
date_created: 2019-01-29T08:32:57Z
date_updated: 2020-07-14T12:47:13Z
file_id: '5896'
file_name: 2019_MolecularPhysics_Li.pdf
file_size: 1309966
relation: main_file
file_date_updated: 2020-07-14T12:47:13Z
has_accepted_license: '1'
isi: 1
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: Molecular Physics
publication_identifier:
issn:
- '00268976'
publication_status: published
publisher: Taylor and Francis
quality_controlled: '1'
related_material:
record:
- id: '8958'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: 'Variational approaches to quantum impurities: from the Fröhlich polaron to
the angulon'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
year: '2019'
...
---
_id: '6646'
abstract:
- lang: eng
text: We demonstrate robust retention of valley coherence and its control via polariton
pseudospin precession through the optical TE-TM splitting in bilayer WS2 microcavity
exciton polaritons at room temperature.
article_number: paper JTu2A.52
article_processing_charge: No
author:
- first_name: Mandeep
full_name: Khatoniar, Mandeep
last_name: Khatoniar
- first_name: Nicholas
full_name: Yama, Nicholas
last_name: Yama
- first_name: Areg
full_name: Ghazaryan, Areg
id: 4AF46FD6-F248-11E8-B48F-1D18A9856A87
last_name: Ghazaryan
orcid: 0000-0001-9666-3543
- first_name: Sriram
full_name: Guddala, Sriram
last_name: Guddala
- first_name: Pouyan
full_name: Ghaemi, Pouyan
last_name: Ghaemi
- first_name: Vinod
full_name: Menon, Vinod
last_name: Menon
citation:
ama: 'Khatoniar M, Yama N, Ghazaryan A, Guddala S, Ghaemi P, Menon V. Room temperature
control of valley coherence in bilayer WS2 exciton polaritons. In: CLEO: Applications
and Technology. Optica Publishing Group; 2019. doi:10.1364/cleo_at.2019.jtu2a.52'
apa: 'Khatoniar, M., Yama, N., Ghazaryan, A., Guddala, S., Ghaemi, P., & Menon,
V. (2019). Room temperature control of valley coherence in bilayer WS2 exciton
polaritons. In CLEO: Applications and Technology. San Jose, CA, United
States: Optica Publishing Group. https://doi.org/10.1364/cleo_at.2019.jtu2a.52'
chicago: 'Khatoniar, Mandeep, Nicholas Yama, Areg Ghazaryan, Sriram Guddala, Pouyan
Ghaemi, and Vinod Menon. “Room Temperature Control of Valley Coherence in Bilayer
WS2 Exciton Polaritons.” In CLEO: Applications and Technology. Optica
Publishing Group, 2019. https://doi.org/10.1364/cleo_at.2019.jtu2a.52.'
ieee: 'M. Khatoniar, N. Yama, A. Ghazaryan, S. Guddala, P. Ghaemi, and V. Menon,
“Room temperature control of valley coherence in bilayer WS2 exciton polaritons,”
in CLEO: Applications and Technology, San Jose, CA, United States, 2019.'
ista: 'Khatoniar M, Yama N, Ghazaryan A, Guddala S, Ghaemi P, Menon V. 2019. Room
temperature control of valley coherence in bilayer WS2 exciton polaritons. CLEO:
Applications and Technology. CLEO: Conference on Lasers and Electro-Optics, paper
JTu2A.52.'
mla: 'Khatoniar, Mandeep, et al. “Room Temperature Control of Valley Coherence in
Bilayer WS2 Exciton Polaritons.” CLEO: Applications and Technology, paper
JTu2A.52, Optica Publishing Group, 2019, doi:10.1364/cleo_at.2019.jtu2a.52.'
short: 'M. Khatoniar, N. Yama, A. Ghazaryan, S. Guddala, P. Ghaemi, V. Menon, in:,
CLEO: Applications and Technology, Optica Publishing Group, 2019.'
conference:
end_date: 2019-05-10
location: San Jose, CA, United States
name: 'CLEO: Conference on Lasers and Electro-Optics'
start_date: 2019-05-05
date_created: 2019-07-17T09:40:44Z
date_published: 2019-05-01T00:00:00Z
date_updated: 2023-10-17T12:14:29Z
day: '01'
department:
- _id: MiLe
doi: 10.1364/cleo_at.2019.jtu2a.52
language:
- iso: eng
month: '05'
oa_version: None
publication: 'CLEO: Applications and Technology'
publication_identifier:
isbn:
- '9781943580576'
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: Room temperature control of valley coherence in bilayer WS2 exciton polaritons
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2019'
...
---
_id: '7190'
abstract:
- lang: eng
text: We investigate the ground-state energy of a one-dimensional Fermi gas with
two bosonic impurities. We consider spinless fermions with no fermion-fermion
interactions. The fermion-impurity and impurity-impurity interactions are modeled
with Dirac delta functions. First, we study the case where impurity and fermion
have equal masses, and the impurity-impurity two-body interaction is identical
to the fermion-impurity interaction, such that the system is solvable with the
Bethe ansatz. For attractive interactions, we find that the energy of the impurity-impurity
subsystem is below the energy of the bound state that exists without the Fermi
gas. We interpret this as a manifestation of attractive boson-boson interactions
induced by the fermionic medium, and refer to the impurity-impurity subsystem
as an in-medium bound state. For repulsive interactions, we find no in-medium
bound states. Second, we construct an effective model to describe these interactions,
and compare its predictions to the exact solution. We use this effective model
to study nonintegrable systems with unequal masses and/or potentials. We discuss
parameter regimes for which impurity-impurity attraction induced by the Fermi
gas can lead to the formation of in-medium bound states made of bosons that repel
each other in the absence of the Fermi gas.
article_number: '033177'
article_processing_charge: No
article_type: original
author:
- first_name: D.
full_name: Huber, D.
last_name: Huber
- first_name: H.-W.
full_name: Hammer, H.-W.
last_name: Hammer
- first_name: Artem
full_name: Volosniev, Artem
id: 37D278BC-F248-11E8-B48F-1D18A9856A87
last_name: Volosniev
orcid: 0000-0003-0393-5525
citation:
ama: Huber D, Hammer H-W, Volosniev A. In-medium bound states of two bosonic impurities
in a one-dimensional Fermi gas. Physical Review Research. 2019;1(3). doi:10.1103/physrevresearch.1.033177
apa: Huber, D., Hammer, H.-W., & Volosniev, A. (2019). In-medium bound states
of two bosonic impurities in a one-dimensional Fermi gas. Physical Review Research.
American Physical Society. https://doi.org/10.1103/physrevresearch.1.033177
chicago: Huber, D., H.-W. Hammer, and Artem Volosniev. “In-Medium Bound States of
Two Bosonic Impurities in a One-Dimensional Fermi Gas.” Physical Review Research.
American Physical Society, 2019. https://doi.org/10.1103/physrevresearch.1.033177.
ieee: D. Huber, H.-W. Hammer, and A. Volosniev, “In-medium bound states of two bosonic
impurities in a one-dimensional Fermi gas,” Physical Review Research, vol.
1, no. 3. American Physical Society, 2019.
ista: Huber D, Hammer H-W, Volosniev A. 2019. In-medium bound states of two bosonic
impurities in a one-dimensional Fermi gas. Physical Review Research. 1(3), 033177.
mla: Huber, D., et al. “In-Medium Bound States of Two Bosonic Impurities in a One-Dimensional
Fermi Gas.” Physical Review Research, vol. 1, no. 3, 033177, American Physical
Society, 2019, doi:10.1103/physrevresearch.1.033177.
short: D. Huber, H.-W. Hammer, A. Volosniev, Physical Review Research 1 (2019).
date_created: 2019-12-17T13:03:41Z
date_published: 2019-12-16T00:00:00Z
date_updated: 2024-02-28T13:11:40Z
day: '16'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/physrevresearch.1.033177
ec_funded: 1
external_id:
arxiv:
- '1908.02483'
file:
- access_level: open_access
checksum: 382eb67e62a77052a23887332d363f96
content_type: application/pdf
creator: dernst
date_created: 2019-12-18T07:13:14Z
date_updated: 2020-07-14T12:47:52Z
file_id: '7193'
file_name: 2019_PhysRevResearch_Huber.pdf
file_size: 1370022
relation: main_file
file_date_updated: 2020-07-14T12:47:52Z
has_accepted_license: '1'
intvolume: ' 1'
issue: '3'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Research
publication_identifier:
issn:
- 2643-1564
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: In-medium bound states of two bosonic impurities in a one-dimensional Fermi
gas
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2019'
...
---
_id: '6092'
abstract:
- lang: eng
text: In 1915, Einstein and de Haas and Barnett demonstrated that changing the magnetization
of a magnetic material results in mechanical rotation and vice versa. At the microscopic
level, this effect governs the transfer between electron spin and orbital angular
momentum, and lattice degrees of freedom, understanding which is key for molecular
magnets, nano-magneto-mechanics, spintronics, and ultrafast magnetism. Until now,
the timescales of electron-to-lattice angular momentum transfer remain unclear,
since modeling this process on a microscopic level requires the addition of an
infinite amount of quantum angular momenta. We show that this problem can be solved
by reformulating it in terms of the recently discovered angulon quasiparticles,
which results in a rotationally invariant quantum many-body theory. In particular,
we demonstrate that nonperturbative effects take place even if the electron-phonon
coupling is weak and give rise to angular momentum transfer on femtosecond timescales.
article_number: '064428'
article_processing_charge: No
author:
- first_name: Johann H
full_name: Mentink, Johann H
last_name: Mentink
- first_name: Mikhail
full_name: Katsnelson, Mikhail
last_name: Katsnelson
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Mentink JH, Katsnelson M, Lemeshko M. Quantum many-body dynamics of the Einstein-de
Haas effect. Physical Review B. 2019;99(6). doi:10.1103/PhysRevB.99.064428
apa: Mentink, J. H., Katsnelson, M., & Lemeshko, M. (2019). Quantum many-body
dynamics of the Einstein-de Haas effect. Physical Review B. American Physical
Society. https://doi.org/10.1103/PhysRevB.99.064428
chicago: Mentink, Johann H, Mikhail Katsnelson, and Mikhail Lemeshko. “Quantum Many-Body
Dynamics of the Einstein-de Haas Effect.” Physical Review B. American Physical
Society, 2019. https://doi.org/10.1103/PhysRevB.99.064428.
ieee: J. H. Mentink, M. Katsnelson, and M. Lemeshko, “Quantum many-body dynamics
of the Einstein-de Haas effect,” Physical Review B, vol. 99, no. 6. American
Physical Society, 2019.
ista: Mentink JH, Katsnelson M, Lemeshko M. 2019. Quantum many-body dynamics of
the Einstein-de Haas effect. Physical Review B. 99(6), 064428.
mla: Mentink, Johann H., et al. “Quantum Many-Body Dynamics of the Einstein-de Haas
Effect.” Physical Review B, vol. 99, no. 6, 064428, American Physical Society,
2019, doi:10.1103/PhysRevB.99.064428.
short: J.H. Mentink, M. Katsnelson, M. Lemeshko, Physical Review B 99 (2019).
date_created: 2019-03-10T22:59:20Z
date_published: 2019-02-01T00:00:00Z
date_updated: 2024-02-28T13:11:54Z
day: '01'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.99.064428
external_id:
arxiv:
- '1802.01638'
isi:
- '000459223400004'
intvolume: ' 99'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1802.01638
month: '02'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review B
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum many-body dynamics of the Einstein-de Haas effect
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 99
year: '2019'
...
---
_id: '6786'
abstract:
- lang: eng
text: Dipolar coupling plays a fundamental role in the interaction between electrically
or magnetically polarized species such as magnetic atoms and dipolar molecules
in a gas or dipolar excitons in the solid state. Unlike Coulomb or contactlike
interactions found in many atomic, molecular, and condensed-matter systems, this
interaction is long-ranged and highly anisotropic, as it changes from repulsive
to attractive depending on the relative positions and orientation of the dipoles.
Because of this unique property, many exotic, symmetry-breaking collective states
have been recently predicted for cold dipolar gases, but only a few have been
experimentally detected and only in dilute atomic dipolar Bose-Einstein condensates.
Here, we report on the first observation of attractive dipolar coupling between
excitonic dipoles using a new design of stacked semiconductor bilayers. We show
that the presence of a dipolar exciton fluid in one bilayer modifies the spatial
distribution and increases the binding energy of excitonic dipoles in a vertically
remote layer. The binding energy changes are explained using a many-body polaron
model describing the deformation of the exciton cloud due to its interaction with
a remote dipolar exciton. The surprising nonmonotonic dependence on the cloud
density indicates the important role of dipolar correlations, which is unique
to dense, strongly interacting dipolar solid-state systems. Our concept provides
a route for the realization of dipolar lattices with strong anisotropic interactions
in semiconductor systems, which open the way for the observation of theoretically
predicted new and exotic collective phases, as well as for engineering and sensing
their collective excitations.
article_number: '021026'
article_processing_charge: No
article_type: original
author:
- first_name: Colin
full_name: Hubert, Colin
last_name: Hubert
- first_name: Yifat
full_name: Baruchi, Yifat
last_name: Baruchi
- first_name: Yotam
full_name: Mazuz-Harpaz, Yotam
last_name: Mazuz-Harpaz
- first_name: Kobi
full_name: Cohen, Kobi
last_name: Cohen
- first_name: Klaus
full_name: Biermann, Klaus
last_name: Biermann
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Ken
full_name: West, Ken
last_name: West
- first_name: Loren
full_name: Pfeiffer, Loren
last_name: Pfeiffer
- first_name: Ronen
full_name: Rapaport, Ronen
last_name: Rapaport
- first_name: Paulo
full_name: Santos, Paulo
last_name: Santos
citation:
ama: Hubert C, Baruchi Y, Mazuz-Harpaz Y, et al. Attractive dipolar coupling between
stacked exciton fluids. Physical Review X. 2019;9(2). doi:10.1103/PhysRevX.9.021026
apa: Hubert, C., Baruchi, Y., Mazuz-Harpaz, Y., Cohen, K., Biermann, K., Lemeshko,
M., … Santos, P. (2019). Attractive dipolar coupling between stacked exciton fluids.
Physical Review X. American Physical Society. https://doi.org/10.1103/PhysRevX.9.021026
chicago: Hubert, Colin, Yifat Baruchi, Yotam Mazuz-Harpaz, Kobi Cohen, Klaus Biermann,
Mikhail Lemeshko, Ken West, Loren Pfeiffer, Ronen Rapaport, and Paulo Santos.
“Attractive Dipolar Coupling between Stacked Exciton Fluids.” Physical Review
X. American Physical Society, 2019. https://doi.org/10.1103/PhysRevX.9.021026.
ieee: C. Hubert et al., “Attractive dipolar coupling between stacked exciton
fluids,” Physical Review X, vol. 9, no. 2. American Physical Society, 2019.
ista: Hubert C, Baruchi Y, Mazuz-Harpaz Y, Cohen K, Biermann K, Lemeshko M, West
K, Pfeiffer L, Rapaport R, Santos P. 2019. Attractive dipolar coupling between
stacked exciton fluids. Physical Review X. 9(2), 021026.
mla: Hubert, Colin, et al. “Attractive Dipolar Coupling between Stacked Exciton
Fluids.” Physical Review X, vol. 9, no. 2, 021026, American Physical Society,
2019, doi:10.1103/PhysRevX.9.021026.
short: C. Hubert, Y. Baruchi, Y. Mazuz-Harpaz, K. Cohen, K. Biermann, M. Lemeshko,
K. West, L. Pfeiffer, R. Rapaport, P. Santos, Physical Review X 9 (2019).
date_created: 2019-08-11T21:59:20Z
date_published: 2019-05-08T00:00:00Z
date_updated: 2024-02-28T13:12:48Z
day: '08'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1103/PhysRevX.9.021026
external_id:
arxiv:
- '1807.11238'
isi:
- '000467402900001'
file:
- access_level: open_access
checksum: 065ff82ee4a1d2c3773ce4b76ff4213c
content_type: application/pdf
creator: dernst
date_created: 2019-08-12T12:14:18Z
date_updated: 2020-07-14T12:47:40Z
file_id: '6802'
file_name: 2019_PhysReviewX_Hubert.pdf
file_size: 1193550
relation: main_file
file_date_updated: 2020-07-14T12:47:40Z
has_accepted_license: '1'
intvolume: ' 9'
isi: 1
issue: '2'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review X
publication_identifier:
eissn:
- 2160-3308
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Attractive dipolar coupling between stacked exciton fluids
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2019'
...
---
_id: '6632'
abstract:
- lang: eng
text: We consider a two-component Bose gas in two dimensions at a low temperature
with short-range repulsive interaction. In the coexistence phase where both components
are superfluid, interspecies interactions induce a nondissipative drag between
the two superfluid flows (Andreev-Bashkin effect). We show that this behavior
leads to a modification of the usual Berezinskii-Kosterlitz-Thouless (BKT) transition
in two dimensions. We extend the renormalization of the superfluid densities at
finite temperature using the renormalization-group approach and find that the
vortices of one component have a large influence on the superfluid properties
of the other, mediated by the nondissipative drag. The extended BKT flow equations indicate that the occurrence of the
vortex unbinding transition in one of the components can induce the breakdown
of superfluidity also in the other, leading to a locking phenomenon for the critical
temperatures of the two gases.
article_number: '063627'
article_processing_charge: No
author:
- first_name: Volker
full_name: Karle, Volker
last_name: Karle
- first_name: Nicolò
full_name: Defenu, Nicolò
last_name: Defenu
- first_name: Tilman
full_name: Enss, Tilman
last_name: Enss
citation:
ama: Karle V, Defenu N, Enss T. Coupled superfluidity of binary Bose mixtures in
two dimensions. Physical Review A. 2019;99(6). doi:10.1103/PhysRevA.99.063627
apa: Karle, V., Defenu, N., & Enss, T. (2019). Coupled superfluidity of binary
Bose mixtures in two dimensions. Physical Review A. American Physical Society.
https://doi.org/10.1103/PhysRevA.99.063627
chicago: Karle, Volker, Nicolò Defenu, and Tilman Enss. “Coupled Superfluidity of
Binary Bose Mixtures in Two Dimensions.” Physical Review A. American Physical
Society, 2019. https://doi.org/10.1103/PhysRevA.99.063627.
ieee: V. Karle, N. Defenu, and T. Enss, “Coupled superfluidity of binary Bose mixtures
in two dimensions,” Physical Review A, vol. 99, no. 6. American Physical
Society, 2019.
ista: Karle V, Defenu N, Enss T. 2019. Coupled superfluidity of binary Bose mixtures
in two dimensions. Physical Review A. 99(6), 063627.
mla: Karle, Volker, et al. “Coupled Superfluidity of Binary Bose Mixtures in Two
Dimensions.” Physical Review A, vol. 99, no. 6, 063627, American Physical
Society, 2019, doi:10.1103/PhysRevA.99.063627.
short: V. Karle, N. Defenu, T. Enss, Physical Review A 99 (2019).
date_created: 2019-07-14T21:59:17Z
date_published: 2019-06-28T00:00:00Z
date_updated: 2024-02-28T13:12:34Z
day: '28'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.99.063627
external_id:
arxiv:
- '1903.06759'
isi:
- '000473133600007'
intvolume: ' 99'
isi: 1
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1903.06759
month: '06'
oa: 1
oa_version: Preprint
publication: Physical Review A
publication_identifier:
eissn:
- '24699934'
issn:
- '24699926'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Coupled superfluidity of binary Bose mixtures in two dimensions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 99
year: '2019'
...
---
_id: '7396'
abstract:
- lang: eng
text: The angular momentum of molecules, or, equivalently, their rotation in three-dimensional
space, is ideally suited for quantum control. Molecular angular momentum is naturally
quantized, time evolution is governed by a well-known Hamiltonian with only a
few accurately known parameters, and transitions between rotational levels can
be driven by external fields from various parts of the electromagnetic spectrum.
Control over the rotational motion can be exerted in one-, two-, and many-body
scenarios, thereby allowing one to probe Anderson localization, target stereoselectivity
of bimolecular reactions, or encode quantum information to name just a few examples.
The corresponding approaches to quantum control are pursued within separate, and
typically disjoint, subfields of physics, including ultrafast science, cold collisions,
ultracold gases, quantum information science, and condensed-matter physics. It
is the purpose of this review to present the various control phenomena, which
all rely on the same underlying physics, within a unified framework. To this end,
recall the Hamiltonian for free rotations, assuming the rigid rotor approximation
to be valid, and summarize the different ways for a rotor to interact with external
electromagnetic fields. These interactions can be exploited for control—from achieving
alignment, orientation, or laser cooling in a one-body framework, steering bimolecular
collisions, or realizing a quantum computer or quantum simulator in the many-body
setting.
article_number: '035005 '
article_processing_charge: No
article_type: original
author:
- first_name: Christiane P.
full_name: Koch, Christiane P.
last_name: Koch
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
- first_name: Dominique
full_name: Sugny, Dominique
last_name: Sugny
citation:
ama: Koch CP, Lemeshko M, Sugny D. Quantum control of molecular rotation. Reviews
of Modern Physics. 2019;91(3). doi:10.1103/revmodphys.91.035005
apa: Koch, C. P., Lemeshko, M., & Sugny, D. (2019). Quantum control of molecular
rotation. Reviews of Modern Physics. American Physical Society. https://doi.org/10.1103/revmodphys.91.035005
chicago: Koch, Christiane P., Mikhail Lemeshko, and Dominique Sugny. “Quantum Control
of Molecular Rotation.” Reviews of Modern Physics. American Physical Society,
2019. https://doi.org/10.1103/revmodphys.91.035005.
ieee: C. P. Koch, M. Lemeshko, and D. Sugny, “Quantum control of molecular rotation,”
Reviews of Modern Physics, vol. 91, no. 3. American Physical Society, 2019.
ista: Koch CP, Lemeshko M, Sugny D. 2019. Quantum control of molecular rotation.
Reviews of Modern Physics. 91(3), 035005.
mla: Koch, Christiane P., et al. “Quantum Control of Molecular Rotation.” Reviews
of Modern Physics, vol. 91, no. 3, 035005, American Physical Society, 2019,
doi:10.1103/revmodphys.91.035005.
short: C.P. Koch, M. Lemeshko, D. Sugny, Reviews of Modern Physics 91 (2019).
date_created: 2020-01-29T16:04:19Z
date_published: 2019-09-18T00:00:00Z
date_updated: 2024-02-28T13:15:33Z
day: '18'
department:
- _id: MiLe
doi: 10.1103/revmodphys.91.035005
external_id:
arxiv:
- '1810.11338'
isi:
- '000486661700001'
intvolume: ' 91'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1810.11338
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Reviews of Modern Physics
publication_identifier:
eissn:
- 1539-0756
issn:
- 0034-6861
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum control of molecular rotation
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 91
year: '2019'
...
---
_id: '195'
abstract:
- lang: eng
text: We demonstrate that identical impurities immersed in a two-dimensional many-particle
bath can be viewed as flux-tube-charged-particle composites described by fractional
statistics. In particular, we find that the bath manifests itself as an external
magnetic flux tube with respect to the impurities, and hence the time-reversal
symmetry is broken for the effective Hamiltonian describing the impurities. The
emerging flux tube acts as a statistical gauge field after a certain critical
coupling. This critical coupling corresponds to the intersection point between
the quasiparticle state and the phonon wing, where the angular momentum is transferred
from the impurity to the bath. This amounts to a novel configuration with emerging
anyons. The proposed setup paves the way to realizing anyons using electrons interacting
with superfluid helium or lattice phonons, as well as using atomic impurities
in ultracold gases.
article_number: '045402'
article_processing_charge: No
author:
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Yakaboylu E, Lemeshko M. Anyonic statistics of quantum impurities in two dimensions.
Physical Review B - Condensed Matter and Materials Physics. 2018;98(4).
doi:10.1103/PhysRevB.98.045402
apa: Yakaboylu, E., & Lemeshko, M. (2018). Anyonic statistics of quantum impurities
in two dimensions. Physical Review B - Condensed Matter and Materials Physics.
American Physical Society. https://doi.org/10.1103/PhysRevB.98.045402
chicago: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anyonic Statistics of Quantum
Impurities in Two Dimensions.” Physical Review B - Condensed Matter and Materials
Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevB.98.045402.
ieee: E. Yakaboylu and M. Lemeshko, “Anyonic statistics of quantum impurities in
two dimensions,” Physical Review B - Condensed Matter and Materials Physics,
vol. 98, no. 4. American Physical Society, 2018.
ista: Yakaboylu E, Lemeshko M. 2018. Anyonic statistics of quantum impurities in
two dimensions. Physical Review B - Condensed Matter and Materials Physics. 98(4),
045402.
mla: Yakaboylu, Enderalp, and Mikhail Lemeshko. “Anyonic Statistics of Quantum Impurities
in Two Dimensions.” Physical Review B - Condensed Matter and Materials Physics,
vol. 98, no. 4, 045402, American Physical Society, 2018, doi:10.1103/PhysRevB.98.045402.
short: E. Yakaboylu, M. Lemeshko, Physical Review B - Condensed Matter and Materials
Physics 98 (2018).
date_created: 2018-12-11T11:45:08Z
date_published: 2018-07-15T00:00:00Z
date_updated: 2023-09-08T13:22:57Z
day: '15'
department:
- _id: MiLe
doi: 10.1103/PhysRevB.98.045402
ec_funded: 1
external_id:
arxiv:
- '1712.00308'
isi:
- '000436939100007'
intvolume: ' 98'
isi: 1
issue: '4'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1712.00308
month: '07'
oa: 1
oa_version: Submitted Version
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review B - Condensed Matter and Materials Physics
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Anyonic statistics of quantum impurities in two dimensions
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 98
year: '2018'
...
---
_id: '427'
abstract:
- lang: eng
text: We investigate the quantum interference induced shifts between energetically
close states in highly charged ions, with the energy structure being observed
by laser spectroscopy. In this work, we focus on hyperfine states of lithiumlike
heavy-Z isotopes and quantify how much quantum interference changes the observed
transition frequencies. The process of photon excitation and subsequent photon
decay for the transition 2s→2p→2s is implemented with fully relativistic and full-multipole
frameworks, which are relevant for such relativistic atomic systems. We consider
the isotopes Pb79+207 and Bi80+209 due to experimental interest, as well as other
examples of isotopes with lower Z, namely Pr56+141 and Ho64+165. We conclude that
quantum interference can induce shifts up to 11% of the linewidth in the measurable
resonances of the considered isotopes, if interference between resonances is neglected.
The inclusion of relativity decreases the cross section by 35%, mainly due to
the complete retardation form of the electric dipole multipole. However, the contribution
of the next higher multipoles (e.g., magnetic quadrupole) to the cross section
is negligible. This makes the contribution of relativity and higher-order multipoles
to the quantum interference induced shifts a minor effect, even for heavy-Z elements.
acknowledgement: "This work was funded by the Portuguese Fundação para a Ciência e
a Tecnologia (FCT/MCTES/PIDDAC) under Grant No. UID/FIS/04559/2013 (LIBPhys). P.A.
acknowledges the support of the FCT, under Contract No. SFRH/BPD/92329/2013. L.S.
acknowledges financial support from the People Programme (Marie Curie Actions) of
the European Union's Seventh Framework Programme (FP7/2007-2013) under REA Grant
Agreement No. (291734). Laboratoire Kastler Brossel (LKB) is “Unité Mixte de Recherche
de Sorbonne Université, de ENS-PSL Research University, du Collège de France et
du CNRS No. 8552.” APPENDIX:\r\n"
article_number: '022510'
article_processing_charge: No
article_type: original
author:
- first_name: Pedro
full_name: Amaro, Pedro
last_name: Amaro
- first_name: Ulisses
full_name: Loureiro, Ulisses
last_name: Loureiro
- first_name: Laleh
full_name: Safari, Laleh
id: 3C325E5E-F248-11E8-B48F-1D18A9856A87
last_name: Safari
- first_name: Filippo
full_name: Fratini, Filippo
last_name: Fratini
- first_name: Paul
full_name: Indelicato, Paul
last_name: Indelicato
- first_name: Thomas
full_name: Stöhlker, Thomas
last_name: Stöhlker
- first_name: José
full_name: Santos, José
last_name: Santos
citation:
ama: Amaro P, Loureiro U, Safari L, et al. Quantum interference in laser spectroscopy
of highly charged lithiumlike ions. Physical Review A - Atomic, Molecular,
and Optical Physics. 2018;97(2). doi:10.1103/PhysRevA.97.022510
apa: Amaro, P., Loureiro, U., Safari, L., Fratini, F., Indelicato, P., Stöhlker,
T., & Santos, J. (2018). Quantum interference in laser spectroscopy of highly
charged lithiumlike ions. Physical Review A - Atomic, Molecular, and Optical
Physics. American Physical Society. https://doi.org/10.1103/PhysRevA.97.022510
chicago: Amaro, Pedro, Ulisses Loureiro, Laleh Safari, Filippo Fratini, Paul Indelicato,
Thomas Stöhlker, and José Santos. “Quantum Interference in Laser Spectroscopy
of Highly Charged Lithiumlike Ions.” Physical Review A - Atomic, Molecular,
and Optical Physics. American Physical Society, 2018. https://doi.org/10.1103/PhysRevA.97.022510.
ieee: P. Amaro et al., “Quantum interference in laser spectroscopy of highly
charged lithiumlike ions,” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 97, no. 2. American Physical Society, 2018.
ista: Amaro P, Loureiro U, Safari L, Fratini F, Indelicato P, Stöhlker T, Santos
J. 2018. Quantum interference in laser spectroscopy of highly charged lithiumlike
ions. Physical Review A - Atomic, Molecular, and Optical Physics. 97(2), 022510.
mla: Amaro, Pedro, et al. “Quantum Interference in Laser Spectroscopy of Highly
Charged Lithiumlike Ions.” Physical Review A - Atomic, Molecular, and Optical
Physics, vol. 97, no. 2, 022510, American Physical Society, 2018, doi:10.1103/PhysRevA.97.022510.
short: P. Amaro, U. Loureiro, L. Safari, F. Fratini, P. Indelicato, T. Stöhlker,
J. Santos, Physical Review A - Atomic, Molecular, and Optical Physics 97 (2018).
date_created: 2018-12-11T11:46:25Z
date_published: 2018-02-21T00:00:00Z
date_updated: 2023-09-15T12:09:35Z
day: '21'
department:
- _id: MiLe
doi: 10.1103/PhysRevA.97.022510
ec_funded: 1
external_id:
arxiv:
- '1802.07920'
isi:
- '000425601000004'
intvolume: ' 97'
isi: 1
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1802.07920
month: '02'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
publication: ' Physical Review A - Atomic, Molecular, and Optical Physics'
publication_status: published
publisher: American Physical Society
publist_id: '7396'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum interference in laser spectroscopy of highly charged lithiumlike ions
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 97
year: '2018'
...
---
_id: '5794'
abstract:
- lang: eng
text: We present an approach to interacting quantum many-body systems based on the
notion of quantum groups, also known as q-deformed Lie algebras. In particular,
we show that, if the symmetry of a free quantum particle corresponds to a Lie
group G, in the presence of a many-body environment this particle can be described
by a deformed group, Gq. Crucially, the single deformation parameter, q, contains
all the information about the many-particle interactions in the system. We exemplify
our approach by considering a quantum rotor interacting with a bath of bosons,
and demonstrate that extracting the value of q from closed-form solutions in the
perturbative regime allows one to predict the behavior of the system for arbitrary
values of the impurity-bath coupling strength, in good agreement with nonperturbative
calculations. Furthermore, the value of the deformation parameter allows one to
predict at which coupling strengths rotor-bath interactions result in a formation
of a stable quasiparticle. The approach based on quantum groups does not only
allow for a drastic simplification of impurity problems, but also provides valuable
insights into hidden symmetries of interacting many-particle systems.
article_number: '255302'
article_processing_charge: No
article_type: original
author:
- first_name: Enderalp
full_name: Yakaboylu, Enderalp
id: 38CB71F6-F248-11E8-B48F-1D18A9856A87
last_name: Yakaboylu
orcid: 0000-0001-5973-0874
- first_name: Mikhail
full_name: Shkolnikov, Mikhail
id: 35084A62-F248-11E8-B48F-1D18A9856A87
last_name: Shkolnikov
orcid: 0000-0002-4310-178X
- first_name: Mikhail
full_name: Lemeshko, Mikhail
id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
last_name: Lemeshko
orcid: 0000-0002-6990-7802
citation:
ama: Yakaboylu E, Shkolnikov M, Lemeshko M. Quantum groups as hidden symmetries
of quantum impurities. Physical Review Letters. 2018;121(25). doi:10.1103/PhysRevLett.121.255302
apa: Yakaboylu, E., Shkolnikov, M., & Lemeshko, M. (2018). Quantum groups as
hidden symmetries of quantum impurities. Physical Review Letters. American
Physical Society. https://doi.org/10.1103/PhysRevLett.121.255302
chicago: Yakaboylu, Enderalp, Mikhail Shkolnikov, and Mikhail Lemeshko. “Quantum
Groups as Hidden Symmetries of Quantum Impurities.” Physical Review Letters.
American Physical Society, 2018. https://doi.org/10.1103/PhysRevLett.121.255302.
ieee: E. Yakaboylu, M. Shkolnikov, and M. Lemeshko, “Quantum groups as hidden symmetries
of quantum impurities,” Physical Review Letters, vol. 121, no. 25. American
Physical Society, 2018.
ista: Yakaboylu E, Shkolnikov M, Lemeshko M. 2018. Quantum groups as hidden symmetries
of quantum impurities. Physical Review Letters. 121(25), 255302.
mla: Yakaboylu, Enderalp, et al. “Quantum Groups as Hidden Symmetries of Quantum
Impurities.” Physical Review Letters, vol. 121, no. 25, 255302, American
Physical Society, 2018, doi:10.1103/PhysRevLett.121.255302.
short: E. Yakaboylu, M. Shkolnikov, M. Lemeshko, Physical Review Letters 121 (2018).
date_created: 2019-01-06T22:59:12Z
date_published: 2018-12-17T00:00:00Z
date_updated: 2023-09-15T12:09:06Z
day: '17'
department:
- _id: MiLe
doi: 10.1103/PhysRevLett.121.255302
ec_funded: 1
external_id:
arxiv:
- '1809.00222'
isi:
- '000454178600009'
intvolume: ' 121'
isi: 1
issue: '25'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1809.00222
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 25681D80-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '291734'
name: International IST Postdoc Fellowship Programme
- _id: 26031614-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P29902
name: Quantum rotations in the presence of a many-body environment
publication: Physical Review Letters
publication_identifier:
issn:
- '00319007'
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantum groups as hidden symmetries of quantum impurities
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 121
year: '2018'
...
---
_id: '420'
abstract:
- lang: eng
text: We analyze the theoretical derivation of the beyond-mean-field equation of
state for two-dimensional gas of dilute, ultracold alkali-metal atoms in the Bardeen–Cooper–Schrieffer
(BCS) to Bose–Einstein condensate (BEC) crossover. We show that at zero temperature
our theory — considering Gaussian fluctuations on top of the mean-field equation
of state — is in very good agreement with experimental data. Subsequently, we
investigate the superfluid density at finite temperature and its renormalization
due to the proliferation of vortex–antivortex pairs. By doing so, we determine
the Berezinskii–Kosterlitz–Thouless (BKT) critical temperature — at which the
renormalized superfluid density jumps to zero — as a function of the inter-atomic
potential strength. We find that the Nelson–Kosterlitz criterion overestimates
the BKT temperature with respect to the renormalization group equations, this
effect being particularly relevant in the intermediate regime of the crossover.
article_processing_charge: No
author:
- first_name: Giacomo
full_name: Bighin, Giacomo
id: 4CA96FD4-F248-11E8-B48F-1D18A9856A87
last_name: Bighin
orcid: 0000-0001-8823-9777
- first_name: Luca
full_name: Salasnich, Luca
last_name: Salasnich
citation:
ama: Bighin G, Salasnich L. Renormalization of the superfluid density in the two-dimensional
BCS-BEC crossover. International Journal of Modern Physics B. 2018;32(17):1840022.
doi:10.1142/S0217979218400222
apa: Bighin, G., & Salasnich, L. (2018). Renormalization of the superfluid density
in the two-dimensional BCS-BEC crossover. International Journal of Modern Physics
B. World Scientific Publishing. https://doi.org/10.1142/S0217979218400222
chicago: Bighin, Giacomo, and Luca Salasnich. “Renormalization of the Superfluid
Density in the Two-Dimensional BCS-BEC Crossover.” International Journal of
Modern Physics B. World Scientific Publishing, 2018. https://doi.org/10.1142/S0217979218400222.
ieee: G. Bighin and L. Salasnich, “Renormalization of the superfluid density in
the two-dimensional BCS-BEC crossover,” International Journal of Modern Physics
B, vol. 32, no. 17. World Scientific Publishing, p. 1840022, 2018.
ista: Bighin G, Salasnich L. 2018. Renormalization of the superfluid density in
the two-dimensional BCS-BEC crossover. International Journal of Modern Physics
B. 32(17), 1840022.
mla: Bighin, Giacomo, and Luca Salasnich. “Renormalization of the Superfluid Density
in the Two-Dimensional BCS-BEC Crossover.” International Journal of Modern
Physics B, vol. 32, no. 17, World Scientific Publishing, 2018, p. 1840022,
doi:10.1142/S0217979218400222.
short: G. Bighin, L. Salasnich, International Journal of Modern Physics B 32 (2018)
1840022.
date_created: 2018-12-11T11:46:22Z
date_published: 2018-07-10T00:00:00Z
date_updated: 2023-09-18T08:09:59Z
day: '10'
department:
- _id: MiLe
doi: 10.1142/S0217979218400222
external_id:
isi:
- '000438217300007'
intvolume: ' 32'
isi: 1
issue: '17'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1710.11171
month: '07'
oa: 1
oa_version: Preprint
page: '1840022'
publication: International Journal of Modern Physics B
publication_status: published
publisher: World Scientific Publishing
publist_id: '7402'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Renormalization of the superfluid density in the two-dimensional BCS-BEC crossover
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 32
year: '2018'
...