Electric-field effects on magnetic anisotropy in Pd/Fe/Pd(0 0 1) surface
Electric-field effects on magnetic anisotropy in Pd/Fe/Pd(0 0 1) surface
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DOI：
10.1088/0022-3727/44/6/064005
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发表时间：
2011-02
期刊：
影响因子：
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通讯作者：
Shinya Haraguchi;M. Tsujikawa;Junpei Gotou;T. Oda
中科院分区：
文献类型：
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作者：
Shinya Haraguchi;M. Tsujikawa;Junpei Gotou;T. Oda
用广义梯度近似的第一性原理电子结构计算方法研究了电场对金属表面Pt/Fe/Pt(0 0 1)和Pd/Fe/Pd(0 0 1)磁各向异性的影响。发现各向异性能量相对于EF的变化是相反的。在铂衬底上的模变率比在钯衬底上的大几个因素。这些结果与现有的实验数据定性地吻合得很好。给出了电子结构，并沿着第二微扰方式讨论了EF效应的起源。
Electric-field (EF) effects have been studied on magnetic anisotropy in the metallic surfaces Pt/Fe/Pt(0 0 1) and Pd/Fe/Pd(0 0 1) by means of the first-principles electronic structure calculation which employs the generalized gradient approximation. The variation of anisotropy energy with respect to the EF is found to be opposite to each other. The modulus rate of the variation is larger by a few factors in the Pt substrate than in the Pd one. These results agree qualitatively well with the available experimental data. The electronic structures are presented and the origins in EF effects are discussed along a line of the second perturbative fashion.