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Anomalous Hall effect in a two-dimensional electron gas with Rashba and Dresselhaus spin-orbit interaction

机译:具有Rashba和Dresselhaus自旋轨道相互作用的二维电子气中的异常霍尔效应

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摘要

We discuss the mechanism of the anomalous Hall effect in a Rashba-Dresselhaus two-dimensional electron gas subjected to a homogeneous out-of-plane magnetization. On the basis of a systematic treatment of the kinetic equations for the spin-density matrix, results are derived for the dynamic Hall conductivity in a closed form. Its nonanalytic dependence on both the scattering time and the frequency of the applied electric field is discussed. Except for in a special Rashba-Dresselhaus model, there is a finite intrinsic anomalous Hall effect, which is extremely sensitive to short-range elastic scattering. (c) 2006 Elsevier Ltd. All rights reserved.
机译:我们讨论了受到均匀平面外磁化的Rashba-Dresselhaus二维电子气中异常霍尔效应的机制。在对自旋密度矩阵的动力学方程进行系统处理的基础上,得出了封闭形式的动态霍尔电导率的结果。讨论了其对散射时间和所施加电场频率的非解析依赖性。除了特殊的Rashba-Dresselhaus模型外,还存在有限的固有异常霍尔效应,该效应对短程弹性散射极为敏感。 (c)2006 Elsevier Ltd.保留所有权利。

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