Пожалуйста, используйте этот идентификатор, чтобы цитировать или ссылаться на этот ресурс:
http://elar.urfu.ru/handle/10995/102336
Название: | Spiral magnetism in the single-band Hubbard model: The Hartree-Fock and slave-boson approaches |
Авторы: | Igoshev, P. A. Timirgazin, M. A. Gilmutdinov, V. F. Arzhnikov, A. K. Irkhin, V. Yu. |
Дата публикации: | 2015 |
Издатель: | Institute of Physics Publishing |
Библиографическое описание: | Spiral magnetism in the single-band Hubbard model: The Hartree-Fock and slave-boson approaches / P. A. Igoshev, M. A. Timirgazin, V. F. Gilmutdinov, et al. — DOI 10.1088/0953-8984/27/44/446002 // Journal of Physics Condensed Matter. — 2015. — Vol. 27. — Iss. 44. — 446002. |
Аннотация: | The ground-state magnetic phase diagram is investigated within the single-band Hubbard model for square and different cubic lattices. The results of employing the generalized non-correlated mean-field (Hartree-Fock) approximation and generalized slave-boson approach by Kotliar and Ruckenstein with correlation effects included are compared. We take into account commensurate ferromagnetic, antiferromagnetic, and incommensurate (spiral) magnetic phases, as well as phase separation into magnetic phases of different types, which was often lacking in previous investigations. It is found that the spiral states and especially ferromagnetism are generally strongly suppressed up to non-realistically large Hubbard U by the correlation effects if nesting is absent and van Hove singularities are well away from the paramagnetic phase Fermi level. The magnetic phase separation plays an important role in the formation of magnetic states, the corresponding phase regions being especially wide in the vicinity of half-filling. The details of non-collinear and collinear magnetic ordering for different cubic lattices are discussed. � 2015 IOP Publishing Ltd. |
Ключевые слова: | HUBBARD MODEL MAGNETIC PHASE DIAGRAM NON-COLLINEAR MAGNETISM SLAVE BOSONS ANTIFERROMAGNETIC MATERIALS ANTIFERROMAGNETISM BOSONS CORRELATION DETECTORS FERROMAGNETISM GROUND STATE HARTREE APPROXIMATION HUBBARD MODEL MOLECULAR PHYSICS PHASE DIAGRAMS PHASE SEPARATION ANTIFERROMAGNETICS CORRELATION EFFECT MAGNETIC PHASE DIAGRAMS MAGNETIC PHASE SEPARATION NON-COLLINEAR MAGNETISM SINGLE-BAND HUBBARD MODEL SLAVE BOSONS VAN HOVE SINGULARITIES MAGNETISM |
URI: | http://elar.urfu.ru/handle/10995/102336 |
Условия доступа: | info:eu-repo/semantics/openAccess |
Идентификатор SCOPUS: | 84946058376 |
Идентификатор PURE: | 544210 5c465f8c-1e5e-4369-ae4e-890094010f2c |
ISSN: | 9538984 |
DOI: | 10.1088/0953-8984/27/44/446002 |
Располагается в коллекциях: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
---|---|---|---|---|
2-s2.0-84946058376.pdf | 490,83 kB | Adobe PDF | Просмотреть/Открыть |
Все ресурсы в архиве электронных ресурсов защищены авторским правом, все права сохранены.