Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102168
Title: Spiral magnetic order, non-uniform states and electron correlations in the conducting transition metal systems
Authors: Igoshev, P. A.
Timirgazin, M. A.
Arzhnikov, A. K.
Antipin, T. V.
Irkhin, V. Y.
Issue Date: 2017
Publisher: Elsevier B.V.
Citation: Spiral magnetic order, non-uniform states and electron correlations in the conducting transition metal systems / P. A. Igoshev, M. A. Timirgazin, A. K. Arzhnikov, et al. — DOI 10.1016/j.jmmm.2016.12.064 // Journal of Magnetism and Magnetic Materials. — 2017. — Vol. 440. — P. 66-69.
Abstract: The ground-state magnetic phase diagram is calculated within the Hubbard and s-d exchange (Kondo) models for square and simple cubic lattices vs. band filling and interaction parameter. The difference of the results owing to the presence of localized moments in the latter model is discussed. We employ a generalized Hartree-Fock approximation (HFA) to treat commensurate ferromagnetic (FM), antiferromagnetic (AFM), and incommensurate (spiral) magnetic phases. The electron correlations are taken into account within the Hubbard model by using the Kotliar-Ruckenstein slave boson approximation (SBA). The main advantage of this approach is a correct qualitative description of the paramagnetic phase: its energy becomes considerably lower as compared with HFA, and the gain in the energy of magnetic phases is substantially reduced. © 2016 Elsevier B.V.
Keywords: ELECTRON CORRELATIONS
MAGNETIC ORDERING
PHASE SEPARATION
ANTIFERROMAGNETISM
ELECTRON CORRELATIONS
GROUND STATE
LANTHANUM COMPOUNDS
MAGNETISM
MAGNETIZATION
PHASE SEPARATION
TRANSITION METALS
ANTIFERROMAGNETICS
INTERACTION PARAMETERS
LOCALIZED MOMENTS
MAGNETIC PHASE DIAGRAMS
PARAMAGNETIC PHASE
SIMPLE-CUBIC LATTICES
SPIRAL MAGNETIC ORDERINGS
TRANSITION METAL SYSTEM
HARTREE APPROXIMATION
URI: http://hdl.handle.net/10995/102168
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85009387047
PURE ID: 1928622
02a5a657-c368-4303-a5a7-5576bfec0b60
ISSN: 3048853
DOI: 10.1016/j.jmmm.2016.12.064
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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