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arXiv 0910.2869cond-mat.mes-hallcond-mat.str-el
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倾斜磁场中共振自旋霍尔效应的无序效应

Disorder effect of resonant spin Hall effect in a tilted magnetic field

Zhan-Feng Jiang, Shun-Qing Shen, Fu-Chun Zhang

摘要:

研究了倾斜磁场作用下二维Rashba耦合电子系统中共振自旋霍尔效应的无序效应。Rashba耦合和Zeeman耦合之间的竞争导致朗道能级的能量交叉,从而产生共振自旋霍尔效应。利用自洽玻恩近似下的Streda公式,我们发现杂质散射使能级展宽,共振自旋霍尔电导在共振点附近出现双峰,在外加倾斜磁场下,该峰恢复.

英文摘要:

We study the disorder effect of resonant spin Hall effect in a two-dimension electron system with Rashba coupling in the presence of a tilted magnetic field. The competition between the Rashba coupling and the Zeeman coupling leads to the energy crossing of the Landau levels, which gives rise to the resonant spin Hall effect. Utilizing the Streda's formula within the self-consistent Born approximation, we find that the impurity scattering broadens the energy levels, and the resonant spin Hall conductance exhibits a double peak around the resonant point, which is recovered in an applied titled magnetic field.

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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