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

被引：98

作者：

Antropov, Vladimir ^{[1
]}

Ke, Liqin ^{[1
]}

Aberg, Daniel ^{[2
]}

机构：

[1] US DOE, Ames Lab, Ames, IA 50011 USA

[2] Lawrence Livermore Natl Lab, US DOE, Livermore, CA 94550 USA

来源：

SOLID STATE COMMUNICATIONS | 2014年 / 194卷

关键词：

Magnetic anisotropy; Perturbation; Screening; Spin-orbit coupling; MAGNETOCRYSTALLINE ANISOTROPY; METALS; ORIGIN;

D O I：

10.1016/j.ssc.2014.06.003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

引用

页码：35 / 38

页数：4

共 19 条

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