磁性多层膜中的自旋矩和波度：Valet-Fert理论与量子方法之间的桥梁
Spin torque and waviness in magnetic multilayers: a bridge between Valet-Fert theory and quantum approaches
摘要：
基于Landauer-Buttiker散射理论和随机矩阵理论，我们建立了一个简单的磁性多层膜输运理论框架。一个简单的变换允许人们从散射的观点出发，去用局部电流和电化学势来表示理论。特别是，我们的理论可以映射到建立良好的经典Valet Fert理论共线系统。对于非共线系统，在没有自旋翻转散射的情况下，我们的理论可以映射到广义电路理论。我们将我们的理论应用到非共线自旋阀中的自旋积累和自旋力矩的角度依赖性。
英文摘要：
We develop a simple theoretical framework for transport in magnetic multilayers, based on Landauer-Buttiker scattering formalism and Random Matrix Theory. A simple transformation allows one to go from the scattering point of view to theories expressed in terms of local currents and electrochemical potential. In particular, our theory can be mapped onto the well established classical Valet Fert theory for collinear systems. For non collinear systems, in the absence of spin-flip scattering, our theory can be mapped onto the generalized circuit theory. We apply our theory to the angular dependance of spin accumulation and spin torque in non-collinear spin valves.
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