Effects of Vertex Corrections on the Chirality-Driven Anomalous Hall Effect
Effects of Vertex Corrections on the Chirality-Driven Anomalous Hall Effect
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DOI：
10.7566/jpsj.83.073707
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发表时间：
2014-06
影响因子：
1.7
通讯作者：
K. Nakazawa;H. Kohno
中科院分区：
文献类型：
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作者：
K. Nakazawa;H. Kohno
由自旋手性引起的反常霍尔效应，这是一种非共面的自旋组态，以前在弱交换耦合的情况下研究过[G.Tatara和H.Kawamura，J.Phys.SoC。日本。71,2613(2002)]在这里重新考虑了由于正常杂质引起的顶点修正。这相当于考虑了电子运动的扩散性质，以及正常杂质散射时的自旋守恒，并引入了自旋扩散长度。通过计算平衡电流的“典型”大小，确定了引起异常霍尔响应的预先存在的圆形持续电流。
The anomalous Hall effect due to spin chirality, a non-coplanar spin configuration, studied previously for the case of weak exchange coupling [G. Tatara and H. Kawamura, J. Phys. Soc. Jpn. 71, 2613 (2002)] is reexamined here by taking account of vertex corrections due to normal impurities. This amounts to considering the diffusive nature of electron motion, as well as spin conservation at the scattering from normal impurities, and introduces the spin diffusion length. The preexisting circular persistent current, responsible for the anomalous Hall response, is identified by calculating the “typical” magnitude of the equilibrium current.