Multitude of phases in correlated lattice fermion systems with spin-dependent disorder
- 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.
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| Author: | J. Skolimowski, Dieter VollhardtGND, Krzysztof Byczuk |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-597875 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/59787 |
| ISSN: | 2399-6528OPAC |
| Parent Title (English): | Journal of Physics Communications |
| Publisher: | IOP Publishing |
| Place of publication: | Bristol |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2018 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2019/09/04 |
| Volume: | 2 |
| Issue: | 2 |
| First Page: | 025031 |
| DOI: | https://doi.org/10.1088/2399-6528/aaae1b |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik III | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  CC-BY 3.0: Creative Commons - Namensnennung (mit Print on Demand) |
