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Constituents of magnetic anisotropy and a screening of spin-orbit coupling in solids

TitleConstituents of magnetic anisotropy and a screening of spin-orbit coupling in solids
Publication TypeJournal Article
Year of Publication2014
AuthorsAntropov, V, Ke, LQ, Aberg, D
JournalSolid State Communications
Volume194
Pagination35-38
Date Published09
Type of ArticleArticle
ISBN Number0038-1098
Accession NumberWOS:000341166000008
KeywordsMagnetic anisotropy, magnetocrystalline anisotropy, metals, origin, Perturbation, Screening, Spin-orbit coupling
Abstract

Using quantum mechanical perturbation theory (PT) we analyze how the energy of perturbation of different orders is renormalized in solids. We test the validity of VT analysis by considering a specific case of spinorbit coupling as a perturbation. We further compare the relativistic energy and the magnetic anisotropy from the PT approach with direct density functional calculations in FePt, CoPt, FePd, MnAl, MnGa, FeNi, and tetragonally strained FeCo. In addition using decomposition of anisotropy into contributions from individual sites and different spin components we explain the microscopic origin of high anisotropy in FePt and CoPt magnets. Published by Elsevier Ltd.

DOI10.1016/j.ssc.2014.06.003
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