论文标题
Rashba系统中的旋转电流产生当前的涡流
Generation of current vortex by spin current in Rashba systems
论文作者
论文摘要
采用公正的大尺度时间依赖性密度 - 矩阵恢复归一化组模拟，我们通过RashBA系统中的自旋注入来证明电荷流动涡流的产生。自旋电流垂直于系统平面，并从附着的抗磁磁性自旋链中注入。我们讨论了由于总角动量和自旋轨道相互作用的保存而发生的当前涡流中自旋角动量之间的转换。这与旋转大厅的效应相反，旋转厅效应侵犯了角度摩肌保护。最后，我们预测涡流伴随可能的未来实验的电磁场。
Employing unbiased large-scale time-dependent density-matrix renormalization-group simulations, we demonstrate the generation of a charge-current vortex via spin injection in the Rashba system. The spin current is polarized perpendicular to the system plane and injected from an attached antiferromagnetic spin chain. We discuss the conversion between spin and orbital angular momentum in the current vortex that occurs because of the conservation of the total angular momentum and the spin-orbit interaction. This is in contrast to the spin Hall effect, in which the angular-momentum conservation is violated. Finally, we predict the electromagnetic field that accompanies the vortex with regard to possible future experiments.
