论文标题
弹性动力诱导的旋转和电荷在散装重金属中
Elasto-Dynamical Induced Spin and Charge Pumping in Bulk Heavy Metals
论文作者
论文摘要
类似于旋转式效应（SHE），{\ it i n hib}的电子结构计算表明，声音子可以诱导沿（旋转）电流（旋转）电流沿（正常）到其传播方向。使用浮子方法，我们计算了弹性动力学诱导的电荷和散装PT的自旋泵，并证明：（i）虽然纵向电荷泵泵是可观察到的固有的，但横向泵送的旋转式旋转式外在起源很大程度上取决于电子宽松时间； （ii）纵向电流电流 是非遗传的起源，而横向自旋电流是一种相对论的效应，最低阶与自旋轨道耦合强度线性缩放； （iii）电荷和自旋泵电流都对弹性波的振幅具有抛物线依赖性。
Analogous to the Spin-Hall Effect (SHE), {\it ab initio} electronic structure calculations reveal that acoustic phonons can induce charge (spin) current flowing along (normal to) its propagation direction. Using Floquet approach we have calculated the elastodynamical-induced charge and spin pumping in bulk Pt and demonstrate that: (i) While the longitudinal charge pumping is an intrinsic observable, the transverse pumped spin-current has an extrinsic origin that depends strongly on the electronic relaxation time; (ii) The longitudinal charge current is of nonrelativstic origin, while the transverse spin current is a relativistic effect that to lowest order scales linearly with the spin-orbit coupling strength; (iii) both charge and spin pumped currents have parabolic dependence on the amplitude of the elastic wave.
