Please use this identifier to cite or link to this item: http://hdl.handle.net/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://hdl.handle.net/10995/101816
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85061772948
PURE ID: 9058047
5569e5cc-9c51-4ecb-a276-3b155ac3d551
ISSN: 0031918X
DOI: 10.1134/S0031918X18130197
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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