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arXiv 1308.4012cond-mat.mes-hallcond-mat.str-el
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自旋霍尔效应的斜散射机制:势散射与自旋轨道散射

Insight into the skew-scattering mechanism of the spin Hall effect: potential scattering versus spin-orbit scattering

Christian Herschbach, Dmitry V. Fedorov, Ingrid Mertig, Martin Gradhand, Kristina Chadova, Hubert Ebert, Diemo Ködderitzsch

摘要:

我们提出了一个详细的分析的倾斜散射贡献的自旋霍尔电导率使用扩展版本的共振散射模型的Fert和Levy [物理评论快报。{ \bf 106},157208(2011)]。对于Cu基质中的$5d$杂质,所提出的相移模型再现了相应的第一性原理计算。这一一致性的关键是考虑与$p$和$d$杂质态有关的两个散射通道,因为所讨论的机制是由两个角动量通道中自旋轨道和势散射之间的微妙相互作用决定的。结果表明,势散射强度对自旋霍尔电导率的大小起着决定性的作用。

英文摘要:

We present a detailed analysis of the skew-scattering contribution to the spin Hall conductivity using an extended version of the resonant scattering model of Fert and Levy [Phys. Rev. Lett. {\bf 106}, 157208 (2011)]. For $5d$ impurities in a Cu host, the proposed phase shift model reproduces the corresponding first-principles calculations. Crucial for that agreement is the consideration of two scattering channels related to $p$ and $d$ impurity states, since the discussed mechanism is governed by a subtle interplay between the spin-orbit and potential scattering in both angular-momentum channels. It is shown that the potential scattering strength plays a decisive role for the magnitude of the spin Hall conductivity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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