[{"article_processing_charge":"No","has_accepted_license":"1","day":"20","citation":{"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.","short":"D. Gotfryd, E. Paerschke, J. Chaloupka, A.M. Oles, K. Wohlfeld, Physical Review Research 2 (2020).","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.","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","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.","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"},"publication":"Physical Review Research","article_type":"original","date_published":"2020-03-20T00:00:00Z","type":"journal_article","issue":"1","abstract":[{"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.","lang":"eng"}],"_id":"7594","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","intvolume":" 2","status":"public","ddc":["530"],"title":"How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator","file":[{"file_name":"2020_PhysRevResearch_Gotfryd.pdf","access_level":"open_access","creator":"dernst","content_type":"application/pdf","file_size":1436735,"file_id":"7610","relation":"main_file","date_created":"2020-03-23T10:18:38Z","date_updated":"2020-07-14T12:48:00Z","checksum":"1be551fd5f5583635076017d7391ffdc"}],"oa_version":"Published Version","month":"03","oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"}],"quality_controlled":"1","doi":"10.1103/PhysRevResearch.2.013353","language":[{"iso":"eng"}],"article_number":"013353","ec_funded":1,"file_date_updated":"2020-07-14T12:48:00Z","year":"2020","publisher":"American Physical Society","department":[{"_id":"MiLe"}],"publication_status":"published","author":[{"full_name":"Gotfryd, Dorota","first_name":"Dorota","last_name":"Gotfryd"},{"full_name":"Paerschke, Ekaterina","first_name":"Ekaterina","last_name":"Paerschke","id":"8275014E-6063-11E9-9B7F-6338E6697425","orcid":"0000-0003-0853-8182"},{"full_name":"Chaloupka, Jiri","first_name":"Jiri","last_name":"Chaloupka"},{"full_name":"Oles, Andrzej M.","last_name":"Oles","first_name":"Andrzej M."},{"last_name":"Wohlfeld","first_name":"Krzysztof","full_name":"Wohlfeld, Krzysztof"}],"volume":2,"date_created":"2020-03-20T15:21:10Z","date_updated":"2021-01-12T08:14:23Z"},{"doi":"10.1103/physrevresearch.2.023154","language":[{"iso":"eng"}],"oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"quality_controlled":"1","project":[{"name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020","grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425"}],"month":"05","publication_identifier":{"issn":["2643-1564"]},"author":[{"full_name":"Mistakidis, S. I.","last_name":"Mistakidis","first_name":"S. I."},{"orcid":"0000-0003-0393-5525","id":"37D278BC-F248-11E8-B48F-1D18A9856A87","last_name":"Volosniev","first_name":"Artem","full_name":"Volosniev, Artem"},{"full_name":"Schmelcher, P.","last_name":"Schmelcher","first_name":"P."}],"date_updated":"2023-02-23T13:20:16Z","date_created":"2020-06-03T11:30:10Z","volume":2,"year":"2020","publication_status":"published","department":[{"_id":"MiLe"}],"publisher":"American Physical Society","file_date_updated":"2020-07-14T12:48:05Z","ec_funded":1,"article_number":"023154 ","date_published":"2020-05-11T00:00:00Z","publication":"Physical Review Research","citation":{"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","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.","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","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.","short":"S.I. Mistakidis, A. Volosniev, P. Schmelcher, Physical Review Research 2 (2020).","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."},"article_type":"original","day":"11","article_processing_charge":"No","has_accepted_license":"1","oa_version":"Published Version","file":[{"file_name":"2020_PhysRevResearch_Mistakidis.pdf","access_level":"open_access","creator":"dernst","content_type":"application/pdf","file_size":1741098,"file_id":"7926","relation":"main_file","date_created":"2020-06-04T13:51:59Z","date_updated":"2020-07-14T12:48:05Z","checksum":"e1c362fe094d6b246b3cd4a49722e78b"}],"_id":"7919","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","title":"Induced correlations between impurities in a one-dimensional quenched Bose gas","ddc":["530"],"intvolume":" 2","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."}],"type":"journal_article"},{"volume":5,"date_created":"2020-11-06T07:21:00Z","date_updated":"2021-01-12T08:20:46Z","author":[{"full_name":"Gotfryd, Dorota","first_name":"Dorota","last_name":"Gotfryd"},{"full_name":"Paerschke, Ekaterina","last_name":"Paerschke","first_name":"Ekaterina","orcid":"0000-0003-0853-8182","id":"8275014E-6063-11E9-9B7F-6338E6697425"},{"last_name":"Wohlfeld","first_name":"Krzysztof","full_name":"Wohlfeld, Krzysztof"},{"full_name":"Oleś, Andrzej M.","first_name":"Andrzej M.","last_name":"Oleś"}],"department":[{"_id":"MiLe"}],"publisher":"MDPI","publication_status":"published","year":"2020","ec_funded":1,"file_date_updated":"2020-11-06T07:24:40Z","article_number":"53","language":[{"iso":"eng"}],"doi":"10.3390/condmat5030053","project":[{"grant_number":"754411","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"}],"quality_controlled":"1","external_id":{"arxiv":["2009.11773"]},"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"oa":1,"publication_identifier":{"issn":["2410-3896"]},"month":"08","file":[{"file_name":"2020_CondensedMatter_Gotfryd.pdf","access_level":"open_access","file_size":768336,"content_type":"application/pdf","creator":"dernst","relation":"main_file","file_id":"8727","date_updated":"2020-11-06T07:24:40Z","date_created":"2020-11-06T07:24:40Z","checksum":"a57a698ff99a11b6665bafd1bac7afbc","success":1}],"oa_version":"Published Version","intvolume":" 5","status":"public","ddc":["530"],"title":"Evolution of spin-orbital entanglement with increasing ising spin-orbit coupling","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"8726","issue":"3","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."}],"type":"journal_article","date_published":"2020-08-26T00:00:00Z","article_type":"original","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","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.","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","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.","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).","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."},"publication":"Condensed Matter","has_accepted_license":"1","article_processing_charge":"No","day":"26","scopus_import":"1"},{"type":"journal_article","issue":"4","abstract":[{"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.","lang":"eng"}],"_id":"7882","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","intvolume":" 8","title":"Clusters in separated tubes of tilted dipoles","status":"public","ddc":["510"],"file":[{"creator":"dernst","content_type":"application/pdf","file_size":990540,"file_name":"2020_Mathematics_Armstrong.pdf","access_level":"open_access","date_created":"2020-05-25T14:42:22Z","date_updated":"2020-07-14T12:48:04Z","checksum":"a05a7df724522203d079673a0d4de4bc","file_id":"7887","relation":"main_file"}],"oa_version":"Published Version","scopus_import":"1","has_accepted_license":"1","article_processing_charge":"No","day":"01","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","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.","short":"J.R. Armstrong, A.S. Jensen, A. Volosniev, N.T. Zinner, Mathematics 8 (2020).","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.","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."},"publication":"Mathematics","article_type":"original","date_published":"2020-04-01T00:00:00Z","article_number":"484","ec_funded":1,"file_date_updated":"2020-07-14T12:48:04Z","year":"2020","department":[{"_id":"MiLe"}],"publisher":"MDPI","publication_status":"published","author":[{"full_name":"Armstrong, Jeremy R.","last_name":"Armstrong","first_name":"Jeremy R."},{"full_name":"Jensen, Aksel S.","last_name":"Jensen","first_name":"Aksel S."},{"id":"37D278BC-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-0393-5525","first_name":"Artem","last_name":"Volosniev","full_name":"Volosniev, Artem"},{"first_name":"Nikolaj T.","last_name":"Zinner","full_name":"Zinner, Nikolaj T."}],"volume":8,"date_created":"2020-05-24T22:01:00Z","date_updated":"2023-08-21T06:23:36Z","publication_identifier":{"eissn":["22277390"]},"month":"04","tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"external_id":{"isi":["000531824100024"]},"oa":1,"project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","name":"ISTplus - Postdoctoral Fellowships","call_identifier":"H2020"}],"quality_controlled":"1","isi":1,"doi":"10.3390/math8040484","language":[{"iso":"eng"}]},{"ec_funded":1,"article_number":"184104 ","date_created":"2020-06-07T22:00:52Z","date_updated":"2023-08-21T07:05:15Z","volume":101,"author":[{"first_name":"Mikhail","last_name":"Maslov","id":"2E65BB0E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-4074-2570","full_name":"Maslov, Mikhail"},{"full_name":"Lemeshko, Mikhail","id":"37CB05FA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6990-7802","first_name":"Mikhail","last_name":"Lemeshko"},{"first_name":"Enderalp","last_name":"Yakaboylu","id":"38CB71F6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-5973-0874","full_name":"Yakaboylu, Enderalp"}],"publication_status":"published","publisher":"American Physical Society","department":[{"_id":"MiLe"}],"year":"2020","month":"05","publication_identifier":{"eissn":["24699969"],"issn":["24699950"]},"language":[{"iso":"eng"}],"doi":"10.1103/PhysRevB.101.184104","isi":1,"quality_controlled":"1","project":[{"name":"Quantum rotations in the presence of a many-body environment","call_identifier":"FWF","_id":"26031614-B435-11E9-9278-68D0E5697425","grant_number":"P29902"},{"call_identifier":"H2020","name":"Angulon: physics and applications of a new quasiparticle","_id":"2688CF98-B435-11E9-9278-68D0E5697425","grant_number":"801770"}],"oa":1,"external_id":{"isi":["000530754700003"],"arxiv":["1912.03092"]},"main_file_link":[{"url":"https://arxiv.org/abs/1912.03092","open_access":"1"}],"abstract":[{"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.","lang":"eng"}],"issue":"18","type":"journal_article","oa_version":"Preprint","status":"public","title":"Synthetic spin-orbit coupling mediated by a bosonic environment","intvolume":" 101","_id":"7933","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","day":"01","article_processing_charge":"No","scopus_import":"1","date_published":"2020-05-01T00:00:00Z","article_type":"original","publication":"Physical Review B","citation":{"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","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.","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","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.","short":"M. Maslov, M. Lemeshko, E. Yakaboylu, Physical Review B 101 (2020).","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."}}]