标题： 自旋波诱导的Rashba自旋轨道耦合系统中的自旋扭矩 显示英文标题

标题： Spin-wave-induced spin torque in Rashba spin-orbit coupling system

摘要： 我们研究了Rashba自旋-轨道耦合对自旋波引起的自旋扭矩的影响，自旋波是磁化强度的平面波动力学。 自旋扭矩来源于线性响应理论，并通过考虑杂质阶梯和顶点修正来计算动态自旋扭矩。 这种动态自旋扭矩分为三项：一个阻尼项，一个$distortion$项，以及运动方程的修正项。 $distorting$扭矩描述了一种仅在Rashba自旋-轨道耦合系统中出现的现象，其中磁化进动的畸变运动受到Rashba耦合的各向异性力的作用。 进动的振荡模式表现出椭圆轨迹，椭圆度取决于嵌套效应的强度，这可以通过减少电子寿命来降低。 显示英文摘要

摘要： We study the effects of Rashba spin-orbit coupling on the spin torque induced by spin waves, which are the plane wave dynamics of magnetization. The spin torque is derived from linear response theory, and we calculate the dynamic spin torque by considering the impurity-ladder-sum vertex corrections. This dynamic spin torque is divided into three terms: a damping term, a $distortion$ term, and a correction term for the equation of motion. The $distorting$ torque describes a phenomenon unique to the Rashba spin-orbit coupling system, where the distorted motion of magnetization precession is subjected to the anisotropic force from the Rashba coupling. The oscillation mode of the precession exhibits an elliptical trajectory, and the ellipticity depends on the strength of the nesting effects, which could be reduced by decreasing the electron lifetime.