标题： 与角动量变化相关的自旋电流和扭矩的公式一致性 显示英文标题

标题： Consistency in Formulation of Spin Current and Torque Associated with a Variance of Angular Momentum

摘要： 受近期对新型自旋霍尔效应兴趣的推动，基于系统对称性和诺特定理，严格推导了考虑自旋-轨道耦合的非相对论量子力学守恒流。获得了作用于自旋的量子力学力以及与角动量变化相关的力矩。因此，自旋和轨道角动量流的变化的动力学解释暗示了作用于与运动自旋相关的“电偶极子”的力矩。讨论了这种力和力矩对具有拉什巴自旋-轨道相互作用的二维电子气中自旋流性质的影响。 显示英文摘要

摘要： Stimulated generally by recent interest in the novel spin Hall effect, the nonrelativistic quantum mechanical conserved currents, taken into account of spin-orbit coupling, are rigorously formulated based on the symmetries of system and Noether' theorem. The quantum mechanical force on the spin as well as the torque associated with the variance of angular momentum are obtained. Consequently, the kinetic interpretation of the variances of spin and orbit angular momentum currents implies a torque on the "electric dipole" associated with the moving spin. The bearing of the force and the torque on the properties of spin current in a two-dimensional electron gas with the Rashba spin-orbit interaction is discussed.