arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.09382cond-mat.mes-hallcond-mat.str-el
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单轴反铁磁绝缘体中的拓扑自旋霍尔效应和可调Skyrmion霍尔效应

Topological spin Hall effects and tunable skyrmion Hall effects in uniaxial antiferromagnetic insulators

Matthew W. Daniels, Weichao Yu, Ran Cheng, Jiang Xiao, Di Xiao

摘要:

电流驱动反铁磁skyrmions物理学的最新进展已经观察到马格努斯力的缺失。我们概述了这种现象的对称性原因,并表明,这种取消将失败的情况下,自旋极化电流。配对微磁学模拟与半经典自旋波输运理论,我们表明,skyrmions产生自旋极化的横向磁振子电流,自旋极化的磁振子电流可以反过来产生反铁磁skyrmions的横向运动。我们研究铁磁和反铁磁的情况下的skyrmion霍尔角的频率依赖性的定性差异,并关闭提出一个简单的skyrmion为基础的磁振子设备的自旋通道解复用。

英文摘要:

Recent advances in the physics of current-driven antiferromagnetic skyrmions have observed the absence of a Magnus force. We outline the symmetry reasons for this phenomenon, and show that this cancellation will fail in the case of spin polarized currents. Pairing micromagnetic simulations with semiclassical spin wave transport theory, we demonstrate that skyrmions produce a spin-polarized transverse magnon current, and that spin-polarized magnon currents can in turn produce transverse motion of antiferromagnetic skyrmions. We examine qualitative differences in the frequency dependence of the skyrmion Hall angle between ferromagnetic and antiferromagnetic cases, and close by proposing a simple skyrmion-based magnonic device for demultiplexing of spin channels.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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