The contribution of spin torque to the spin Hall coefficient and spin motive force in a spin–orbit coupling system
The contribution of spin torque to the spin Hall coefficient and spin motive force in a spin–orbit coupling system
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DOI：
10.1088/0953-8984/19/49/496220
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发表时间：
2007-12
期刊：
影响因子：
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通讯作者：
Yong-ping Fu;Dong Wang;F. Huang;Y. D. Li;W. M. Liu
中科院分区：
文献类型：
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作者：
Yong-ping Fu;Dong Wang;F. Huang;Y. D. Li;W. M. Liu
我们利用量子电动力学严格推导了相对论角动量守恒方程。使用 Foldy-Wouthuysen 变换精确研究了自旋轨道耦合系统中高达 1/c4 量级的新型非相对论自旋电流和扭矩。我们找到了一个完美的自旋霍尔系数，包括自旋力矩偶极子的贡献。还获得了一种类似于洛伦兹力的新型自旋动力，以帮助我们理解自旋霍尔效应。
We derive rigorously the relativistic angular momentum conservation equation by means of quantum electrodynamics. The novel nonrelativistic spin current and torque in the spin–orbit coupling system, up to the order of 1/c4, are exactly investigated using Foldy–Wouthuysen transformations. We find a perfect spin Hall coefficient including the contribution of the spin torque dipole. A novel spin motive force, analogous to the Lorentz force, is also obtained to help us understand the spin Hall effect.