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http://elar.urfu.ru/handle/10995/101816
Title: | Electron States and Magnetic Phase Diagrams of Strongly Correlated Systems |
Authors: | Irkhin, V. Y. Igoshev, P. A. |
Issue Date: | 2018 |
Publisher: | Pleiades Publishing |
Citation: | Irkhin V. Y. Electron States and Magnetic Phase Diagrams of Strongly Correlated Systems / V. Y. Irkhin, P. A. Igoshev. — DOI 10.1134/S0031918X18130197 // Physics of Metals and Metallography. — 2018. — Vol. 119. — Iss. 13. — P. 1267-1271. |
Abstract: | Abstract: Various auxiliary-particle approaches to treat electron correlations in many-electron models are analyzed. Applications to copper-oxide layered systems are discussed. The ground-state magnetic phase diagrams are considered within the Hubbard and exchange (Kondo) models for square and simple cubic lattices vs. band filling and interaction parameter. A generalized Hartree–Fock approximation is employed to treat commensurate ferro-, antiferromagnetic, and incommensurate (spiral) magnetic phases, and also magnetic phase separation. The correlations are taken into account within the Hubbard model by using the slave-boson approach. The main advantage of this approach is correct estimating the contribution of doubly occupied states number and therefore the paramagnetic phase energy. © 2018, Pleiades Publishing, Ltd. |
Keywords: | ANTIFERROMAGNETIC MATERIALS COPPER OXIDES GROUND STATE HARTREE APPROXIMATION PHASE DIAGRAMS PHASE SEPARATION ANTIFERROMAGNETICS INTERACTION PARAMETERS MAGNETIC PHASE DIAGRAMS MAGNETIC PHASE SEPARATION MAGNETIC PHASIS PARAMAGNETIC PHASE SIMPLE-CUBIC LATTICES STRONGLY CORRELATED SYSTEMS MAGNETISM |
URI: | http://elar.urfu.ru/handle/10995/101816 |
Access: | info:eu-repo/semantics/openAccess |
RSCI ID: | 38640741 |
SCOPUS ID: | 85061772948 |
WOS ID: | 000459393000005 |
PURE ID: | 5569e5cc-9c51-4ecb-a276-3b155ac3d551 9058047 |
ISSN: | 0031918X |
DOI: | 10.1134/S0031918X18130197 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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