Significant suppression of galvanomagnetic signal under dynamical spin injection in CoFeB/Pt bilayer
Significant suppression of galvanomagnetic signal under dynamical spin injection in CoFeB/Pt bilayer
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DOI：
10.1063/5.0046601
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发表时间：
2021-04-12
影响因子：
4
通讯作者：
Kimura, Takashi
中科院分区：
文献类型：
--
作者：
Obinata, Sora;Ohnishi, Kohei;Kimura, Takashi
本文提出了一种有效的检测铁磁/双金属双层膜中动态自旋注入的结构。我们证明了一个高度对称的信号的清晰检测，表明由于从铁磁层的电磁效应的寄生信号的显着抑制。信号幅度的角度依赖性确保了所观察到的信号是由动态自旋注入引起的逆自旋霍尔效应引起的。我们还发现涡流的重要性，诱导自旋整流信号从铁磁层。
An effective detection structure for a dynamical spin injection in a ferromagnetic/nonmagnetic metal bilayer has been developed. We demonstrate a clear detection of a highly symmetric signal, indicating a significant suppression of spurious signals due to the galvanomagnetic effects from the ferromagnetic layer. The angular dependence of the signal amplitude assures that the observed signal is caused by the inverse spin Hall effect due to the dynamical spin injection. We also find the importance of the eddy current that induces spin-rectified signals from a ferromagnetic layer.