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http://elar.urfu.ru/handle/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://elar.urfu.ru/handle/10995/102168 |
Access: | info:eu-repo/semantics/openAccess |
SCOPUS ID: | 85009387047 |
WOS ID: | 000406865200020 |
PURE ID: | 02a5a657-c368-4303-a5a7-5576bfec0b60 1928622 |
ISSN: | 3048853 |
DOI: | 10.1016/j.jmmm.2016.12.064 |
Appears in Collections: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
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