Spin-Hall transport in a two-dimensional electron system with magnetic impurities

被引：0
作者：
P. Liu
S.-J. Xiong
机构：
[1] National Laboratory of Solid State Microstructures and Department of Physics,
[2] Nanjing University,undefined
来源：
The European Physical Journal B - Condensed Matter and Complex Systems | 2006年 / 51卷
关键词：
72.10.-d Theory of electronic transport; scattering mechanisms; 72.15.Gd Galvanomagnetic and other magnetotransport effects; 85.75.-d Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields ;
D O I：
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学科分类号：
摘要：
The spin Hall transport properties in a two-dimensional electron system with both Rashba spin-orbit coupling (SOC) and magnetic impurities are investigated. Electrons are scattered by impurities through an exchange interaction that leads to spin flip-flop processes and so changes the spin Hall effect induced by the SOC. The spin Hall conductance is calculated in a 4-terminal system using the Landauer-Buttiker formula and Green function approach. In comparison with the simulation results on nonmagnetic impurities doping systems, our results reveal that the spin Hall conductance is still nonzero in a system with a large density of magnetic impurities and a finite intensity of the exchange interaction between the electrons and impurities, and its sign may be altered when the doping density and interaction strength are large enough.
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页码：513 / 516
页数：3
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