Spin Current Generation Using a Surface Acoustic Wave Generated via Spin-Rotation Coupling
Spin Current Generation Using a Surface Acoustic Wave Generated via Spin-Rotation Coupling
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DOI：
10.1103/physrevlett.119.077202
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发表时间：
2017-08-16
影响因子：
8.6
通讯作者：
Nozaki, Y.
中科院分区：
文献类型：
--
作者：
Kobayashi, D.;Yoshikawa, T.;Nozaki, Y.
我们演示了在铜膜中利用声表面波（SAW）通过自旋-旋转耦合（SRC）产生交变自旋电流（SC）。铁磁共振注入SAW引起的观察在Ni-Fe膜附着到Cu膜，与谐振进一步发现被抑制通过插入的SiO2膜到界面。谐振强度取决于声表面波波矢与Ni-Fe薄膜磁化强度之间的夹角。这种角度的依赖性是可以解释的自旋转移力矩的存在，从SC通过SRC产生的。
We demonstrate the generation of alternating spin current (SC) via spin-rotation coupling (SRC) using a surface acoustic wave (SAW) in a Cu film. Ferromagnetic resonance caused by injecting SAWs was observed in a Ni-Fe film attached to a Cu film, with the resonance further found to be suppressed through the insertion of a SiO2 film into the interface. The intensity of the resonance depended on the angle between the wave vector of the SAW and the magnetization of the Ni-Fe film. This angular dependence is explicable in terms of the presence of spin transfer torque from a SC generated via SRC.