Electric-field control of surface magnetic anisotropy: a density functional approach

被引：69

作者：

Zhang, Hongbin ^{[1
]}

Richter, Manuel ^{[1
]}

Koepernik, Klaus ^{[1
]}

Opahle, Ingo ^{[2
]}

Tasnadi, Ferenc ^{[3
]}

Eschrig, Helmut ^{[1
]}

机构：

[1] IFW Dresden eV, D-01171 Dresden, Germany

[2] Goethe Univ Frankfurt, Inst Theoret Phys, D-60054 Frankfurt, Germany

[3] Linkoping Univ, Dept Phys Chem & Biol, IFM, S-58183 Linkoping, Sweden

来源：

NEW JOURNAL OF PHYSICS | 2009年 / 11卷

关键词：

MAGNETOCRYSTALLINE ANISOTROPY;

D O I：

10.1088/1367-2630/11/4/043007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In a recent experiment, Weisheit et al ( 2007 Science 315 349) demonstrated that the coercivity of thin L1(0) FePt and FePd films can be modified by the external electric field in an electrochemical environment. Here, this observation is confirmed by density functional calculations for the intrinsic magnetic anisotropy. The origin of the effect is clarified by means of a general and simple method to simulate charged metal surfaces. It is predicted that the coercivity of thin CoPt films is much more susceptible to electric field than that of FePt films.

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页数：8

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