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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2016
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/1607.07708 |
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| _version_ | 1866909180556738560 |
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| author | Skolimowski, J. Vollhardt, D. Byczuk, K. |
| author_facet | Skolimowski, J. Vollhardt, D. Byczuk, K. |
| contents | The magnetic phases induced by the interplay between disorder acting only on particles with a given spin projection ("spin-dependent disorder") and a local repulsive interaction is explored. To this end the magnetic ground state phase diagram of the Hubbard model at half-filling is computed within dynamical mean-field theory combined with the geometric average over disorder, which is able to describe Anderson localization. Five distinct phases are identified: a ferromagnetically polarized metal, two types of insulators, and two types of spin-selective localized phases. The latter four phases possess different long-range order of the spins. The predicted phase diagram may be tested experimentally using cold fermions in optical lattices subject to spin-dependent random potentials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1607_07708 |
| institution | arXiv |
| publishDate | 2016 |
| record_format | arxiv |
| spellingShingle | Multitude of phases in correlated lattice fermion systems with spin-dependent disorder Skolimowski, J. Vollhardt, D. Byczuk, K. Strongly Correlated Electrons Disordered Systems and Neural Networks Quantum Gases The magnetic phases induced by the interplay between disorder acting only on particles with a given spin projection ("spin-dependent disorder") and a local repulsive interaction is explored. To this end the magnetic ground state phase diagram of the Hubbard model at half-filling is computed within dynamical mean-field theory combined with the geometric average over disorder, which is able to describe Anderson localization. Five distinct phases are identified: a ferromagnetically polarized metal, two types of insulators, and two types of spin-selective localized phases. The latter four phases possess different long-range order of the spins. The predicted phase diagram may be tested experimentally using cold fermions in optical lattices subject to spin-dependent random potentials. |
| title | Multitude of phases in correlated lattice fermion systems with spin-dependent disorder |
| topic | Strongly Correlated Electrons Disordered Systems and Neural Networks Quantum Gases |
| url | https://arxiv.org/abs/1607.07708 |