--- _id: '8198' abstract: - lang: eng text: We investigate how the critical driving amplitude at the Floquet many-body localized (MBL) to ergodic phase transition differs between smooth and nonsmooth drives. To this end, we numerically study a disordered spin-1/2 chain which is periodically driven by a sine or square-wave drive over a wide range of driving frequencies. In both cases the critical driving amplitude increases monotonically with the frequency, and at large frequencies it is identical for the two drives. However, at low and intermediate frequencies the critical amplitude of the square-wave drive depends strongly on the frequency, while that of the sinusoidal drive is almost constant over a wide frequency range. By analyzing the density of drive-induced resonances we conclude that this difference is due to resonances induced by the higher harmonics which are present (absent) in the Fourier spectrum of the square-wave (sine) drive. Furthermore, we suggest a numerically efficient method for estimating the frequency dependence of the critical driving amplitudes for different drives which is based on calculating the density of drive-induced resonances. We conclude that delocalization occurs once the density of drive-induced resonances reaches a critical value determined only by the static system. acknowledgement: We thank Y. Bar Lev, T. Biadse, and, particularly, E. Bairey and B. Katzir for illuminating discussions and their many insights and help. The authors thank N. Lindner for his support throughout this project. We are further grateful to M. Serbyn, A. Kamenev, A. Turner, and S. de Nicola for reading the manuscript and providing good feedback and suggestions. We acknowledge financial support from the Defense Advanced Research Projects Agency through the DRINQS program, Grant No. D18AC00025. T.G. was in part supported by an Aly Kaufman Fellowship at the Technion. T.G. acknowledges funding from the Institute of Science and Technology (IST) Austria and from the European Union’s Horizon 2020 research and innovation program under Marie SkłodowskaCurie Grant Agreement No. 754411.under the Marie Skłodowska-Curie Grant Agreement No.754411. article_number: '214204' article_processing_charge: No article_type: original author: - first_name: Asaf A. full_name: Diringer, Asaf A. last_name: Diringer - first_name: Tobias full_name: Gulden, Tobias id: 1083E038-9F73-11E9-A4B5-532AE6697425 last_name: Gulden orcid: 0000-0001-6814-7541 citation: ama: Diringer AA, Gulden T. Impact of drive harmonics on the stability of Floquet many-body localization. Physical Review B. 2021;103(21). doi:10.1103/PhysRevB.103.214204 apa: Diringer, A. A., & Gulden, T. (2021). Impact of drive harmonics on the stability of Floquet many-body localization. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.103.214204 chicago: Diringer, Asaf A., and Tobias Gulden. “Impact of Drive Harmonics on the Stability of Floquet Many-Body Localization.” Physical Review B. American Physical Society, 2021. https://doi.org/10.1103/PhysRevB.103.214204. ieee: A. A. Diringer and T. Gulden, “Impact of drive harmonics on the stability of Floquet many-body localization,” Physical Review B, vol. 103, no. 21. American Physical Society, 2021. ista: Diringer AA, Gulden T. 2021. Impact of drive harmonics on the stability of Floquet many-body localization. Physical Review B. 103(21), 214204. mla: Diringer, Asaf A., and Tobias Gulden. “Impact of Drive Harmonics on the Stability of Floquet Many-Body Localization.” Physical Review B, vol. 103, no. 21, 214204, American Physical Society, 2021, doi:10.1103/PhysRevB.103.214204. short: A.A. Diringer, T. Gulden, Physical Review B 103 (2021). date_created: 2020-08-04T13:03:40Z date_published: 2021-06-21T00:00:00Z date_updated: 2023-08-04T10:56:33Z day: '21' department: - _id: MaSe doi: 10.1103/PhysRevB.103.214204 ec_funded: 1 external_id: arxiv: - '2007.14879' isi: - '000664429700005' intvolume: ' 103' isi: 1 issue: '21' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2007.14879 month: '06' oa: 1 oa_version: Preprint project: - _id: 260C2330-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '754411' name: ISTplus - Postdoctoral Fellowships publication: Physical Review B publication_identifier: eissn: - '24699969' issn: - '24699950' publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: Impact of drive harmonics on the stability of Floquet many-body localization type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 103 year: '2021' ... --- _id: '9570' abstract: - lang: eng text: We present conductance-matrix measurements in long, three-terminal hybrid superconductor-semiconductor nanowires, and compare with theoretical predictions of a magnetic-field-driven, topological quantum phase transition. By examining the nonlocal conductance, we identify the closure of the excitation gap in the bulk of the semiconductor before the emergence of zero-bias peaks, ruling out spurious gap-closure signatures from localized states. We observe that after the gap closes, nonlocal signals and zero-bias peaks fluctuate strongly at both ends, inconsistent with a simple picture of clean topological superconductivity. acknowledgement: We acknowledge insightful discussions with K. Flensberg, E. B. Hansen, T. Karzig, R. Lutchyn, D. Pikulin, E. Prada, and R. Aguado. This work was supported by Microsoft Project Q and the Danmarks Grundforskningsfond. C.M.M. acknowledges support from the Villum Fonden. A.P.H. and L.C. contributed equally to this work. article_number: '235201' article_processing_charge: No article_type: original author: - first_name: Denise full_name: Puglia, Denise id: 4D495994-AE37-11E9-AC72-31CAE5697425 last_name: Puglia - first_name: E. A. full_name: Martinez, E. A. last_name: Martinez - first_name: G. C. full_name: Ménard, G. C. last_name: Ménard - first_name: A. full_name: Pöschl, A. last_name: Pöschl - first_name: S. full_name: Gronin, S. last_name: Gronin - first_name: G. C. full_name: Gardner, G. C. last_name: Gardner - first_name: R. full_name: Kallaher, R. last_name: Kallaher - first_name: M. J. full_name: Manfra, M. J. last_name: Manfra - first_name: C. M. full_name: Marcus, C. M. last_name: Marcus - first_name: Andrew P full_name: Higginbotham, Andrew P id: 4AD6785A-F248-11E8-B48F-1D18A9856A87 last_name: Higginbotham orcid: 0000-0003-2607-2363 - first_name: L. full_name: Casparis, L. last_name: Casparis citation: ama: Puglia D, Martinez EA, Ménard GC, et al. Closing of the induced gap in a hybrid superconductor-semiconductor nanowire. Physical Review B. 2021;103(23). doi:10.1103/PhysRevB.103.235201 apa: Puglia, D., Martinez, E. A., Ménard, G. C., Pöschl, A., Gronin, S., Gardner, G. C., … Casparis, L. (2021). Closing of the induced gap in a hybrid superconductor-semiconductor nanowire. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.103.235201 chicago: Puglia, Denise, E. A. Martinez, G. C. Ménard, A. Pöschl, S. Gronin, G. C. Gardner, R. Kallaher, et al. “Closing of the Induced Gap in a Hybrid Superconductor-Semiconductor Nanowire.” Physical Review B. American Physical Society, 2021. https://doi.org/10.1103/PhysRevB.103.235201. ieee: D. Puglia et al., “Closing of the induced gap in a hybrid superconductor-semiconductor nanowire,” Physical Review B, vol. 103, no. 23. American Physical Society, 2021. ista: Puglia D, Martinez EA, Ménard GC, Pöschl A, Gronin S, Gardner GC, Kallaher R, Manfra MJ, Marcus CM, Higginbotham AP, Casparis L. 2021. Closing of the induced gap in a hybrid superconductor-semiconductor nanowire. Physical Review B. 103(23), 235201. mla: Puglia, Denise, et al. “Closing of the Induced Gap in a Hybrid Superconductor-Semiconductor Nanowire.” Physical Review B, vol. 103, no. 23, 235201, American Physical Society, 2021, doi:10.1103/PhysRevB.103.235201. short: D. Puglia, E.A. Martinez, G.C. Ménard, A. Pöschl, S. Gronin, G.C. Gardner, R. Kallaher, M.J. Manfra, C.M. Marcus, A.P. Higginbotham, L. Casparis, Physical Review B 103 (2021). date_created: 2021-06-20T22:01:33Z date_published: 2021-06-15T00:00:00Z date_updated: 2023-08-08T14:08:08Z day: '15' department: - _id: AnHi doi: 10.1103/PhysRevB.103.235201 external_id: arxiv: - '2006.01275' isi: - '000661512500002' intvolume: ' 103' isi: 1 issue: '23' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2006.01275 month: '06' 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' related_material: record: - id: '13080' relation: research_data status: public scopus_import: '1' status: public title: Closing of the induced gap in a hybrid superconductor-semiconductor nanowire type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 103 year: '2021' ... --- _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: '8944' abstract: - lang: eng text: "Superconductor insulator transition in transverse magnetic field is studied in the highly disordered MoC film with the product of the Fermi momentum and the mean free path kF*l close to unity. Surprisingly, the Zeeman paramagnetic effects dominate over orbital coupling on both sides of the transition. In superconducting state it is evidenced by a high upper critical magnetic field \U0001D435\U0001D4502, by its square root dependence on temperature, as well as by the Zeeman splitting of the quasiparticle density of states (DOS) measured by scanning tunneling microscopy. At \U0001D435\U0001D4502 a logarithmic anomaly in DOS is observed. This anomaly is further enhanced in increasing magnetic field, which is explained by the Zeeman splitting of the Altshuler-Aronov DOS driving\r\nthe system into a more insulating or resistive state. Spin dependent Altshuler-Aronov correction is also needed to explain the transport behavior above \U0001D435\U0001D4502." acknowledgement: 'We gratefully acknowledge helpful conversations with B.L. Altshuler and R. Hlubina. The work was supported by the projects APVV-18-0358, VEGA 2/0058/20, VEGA 1/0743/19 the European Microkelvin Platform, the COST action CA16218 (Nanocohybri) and by U.S. Steel Košice. ' article_number: '180508' article_processing_charge: No article_type: original author: - first_name: Martin full_name: Zemlicka, Martin id: 2DCF8DE6-F248-11E8-B48F-1D18A9856A87 last_name: Zemlicka - first_name: M. full_name: Kopčík, M. last_name: Kopčík - first_name: P. full_name: Szabó, P. last_name: Szabó - first_name: T. full_name: Samuely, T. last_name: Samuely - first_name: J. full_name: Kačmarčík, J. last_name: Kačmarčík - first_name: P. full_name: Neilinger, P. last_name: Neilinger - first_name: M. full_name: Grajcar, M. last_name: Grajcar - first_name: P. full_name: Samuely, P. last_name: Samuely citation: ama: 'Zemlicka M, Kopčík M, Szabó P, et al. Zeeman-driven superconductor-insulator transition in strongly disordered MoC films: Scanning tunneling microscopy and transport studies in a transverse magnetic field. Physical Review B. 2020;102(18). doi:10.1103/PhysRevB.102.180508' apa: 'Zemlicka, M., Kopčík, M., Szabó, P., Samuely, T., Kačmarčík, J., Neilinger, P., … Samuely, P. (2020). Zeeman-driven superconductor-insulator transition in strongly disordered MoC films: Scanning tunneling microscopy and transport studies in a transverse magnetic field. Physical Review B. American Physical Society. https://doi.org/10.1103/PhysRevB.102.180508' chicago: 'Zemlicka, Martin, M. Kopčík, P. Szabó, T. Samuely, J. Kačmarčík, P. Neilinger, M. Grajcar, and P. Samuely. “Zeeman-Driven Superconductor-Insulator Transition in Strongly Disordered MoC Films: Scanning Tunneling Microscopy and Transport Studies in a Transverse Magnetic Field.” Physical Review B. American Physical Society, 2020. https://doi.org/10.1103/PhysRevB.102.180508.' ieee: 'M. Zemlicka et al., “Zeeman-driven superconductor-insulator transition in strongly disordered MoC films: Scanning tunneling microscopy and transport studies in a transverse magnetic field,” Physical Review B, vol. 102, no. 18. American Physical Society, 2020.' ista: 'Zemlicka M, Kopčík M, Szabó P, Samuely T, Kačmarčík J, Neilinger P, Grajcar M, Samuely P. 2020. Zeeman-driven superconductor-insulator transition in strongly disordered MoC films: Scanning tunneling microscopy and transport studies in a transverse magnetic field. Physical Review B. 102(18), 180508.' mla: 'Zemlicka, Martin, et al. “Zeeman-Driven Superconductor-Insulator Transition in Strongly Disordered MoC Films: Scanning Tunneling Microscopy and Transport Studies in a Transverse Magnetic Field.” Physical Review B, vol. 102, no. 18, 180508, American Physical Society, 2020, doi:10.1103/PhysRevB.102.180508.' short: M. Zemlicka, M. Kopčík, P. Szabó, T. Samuely, J. Kačmarčík, P. Neilinger, M. Grajcar, P. Samuely, Physical Review B 102 (2020). date_created: 2020-12-13T23:01:21Z date_published: 2020-11-01T00:00:00Z date_updated: 2023-08-24T10:53:36Z day: '01' department: - _id: JoFi doi: 10.1103/PhysRevB.102.180508 external_id: arxiv: - '2011.04329' isi: - '000591509900003' intvolume: ' 102' isi: 1 issue: '18' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/2011.04329 month: '11' 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: 'Zeeman-driven superconductor-insulator transition in strongly disordered MoC films: Scanning tunneling microscopy and transport studies in a transverse magnetic field' type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 102 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' ...