Separation of the individual contributions to the spin Hall effect in dilute alloys within the first-principles Kubo-Streda approach
Separation of the individual contributions to the spin Hall effect in dilute alloys within the first-principles Kubo-Streda approach
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DOI：
10.1103/physrevb.92.045120
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发表时间：
2015-07-24
影响因子：
3.7
通讯作者：
Ebert, Hubert
中科院分区：
文献类型：
--
作者：
Chadova, Kristina;Fedorov, Dmitry V.;Ebert, Hubert
在从头计算的Kubo-Streda方法中，我们提出了一种分离自旋霍尔电导率的本征贡献、侧跃贡献和斜散射贡献的方法。此外，还量化了对侧跳机制的两个不同的贡献，它们要么独立于顶点修正，要么单独由顶点修正引起。这使得我们可以详细分析各个微观因素对自旋霍尔效应的影响。通过对以铜、金、铂为基质的稀有金属合金的第一性原理研究，证明了该方法的有效性。
We present a procedure for the separation of the intrinsic, side-jump, and skew-scattering contributions to the spin Hall conductivity within the ab initio Kubo-Streda approach. Furthermore, two distinct contributions to the side-jump mechanism, either independent of the vertex corrections or solely caused by them, are quantified as well. This allows for a detailed analysis of individual microscopic contributions to the spin Hall effect. The efficiency of the proposed method is demonstrated by a first-principles study of dilute metallic alloys based on Cu, Au, and Pt hosts.