Spin Backflow and ac Voltage Generation by Spin Pumping and the Inverse Spin Hall Effect
Spin Backflow and ac Voltage Generation by Spin Pumping and the Inverse Spin Hall Effect
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DOI：
10.1103/physrevlett.110.217602
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发表时间：
2013-05-23
影响因子：
8.6
通讯作者：
Bauer, Gerrit E. W.
中科院分区：
文献类型：
--
作者：
Jiao, HuJun;Bauer, Gerrit E. W.
旋进铁磁体抽运到相邻正常金属中的自旋电流具有平行于旋进轴的恒定极化分量和垂直于磁化方向的旋转极化分量。前者现在通常被检测为由逆自旋霍尔效应（ISHE）引起的直流电压。在这里，我们计算交流ISHE电压远大于直流信号的各种材料组合，并讨论最佳条件下观察效果。自旋的回流被证明是必不可少的蒸馏参数从测得的ISHE电压为直流和交流配置。
The spin current pumped by a precessing ferromagnet into an adjacent normal metal has a constant polarization component parallel to the precession axis and a rotating one normal to the magnetization. The former is now routinely detected as a dc voltage induced by the inverse spin Hall effect (ISHE). Here we compute ac ISHE voltages much larger than the dc signals for various material combinations and discuss optimal conditions to observe the effect. The backflow of spin is shown to be essential to distill parameters from measured ISHE voltages for both dc and ac configurations.