Magnetization-dependent inverse spin Hall effect in compensated ferrimagnet TbCo alloys
Magnetization-dependent inverse spin Hall effect in compensated ferrimagnet TbCo alloys
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DOI：
10.1103/physrevb.103.214408
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发表时间：
2021-06
影响因子：
3.7
通讯作者：
A. Yağmur;S. Sumi;H. Awano;K. Tanabe
中科院分区：
文献类型：
--
作者：
A. Yağmur;S. Sumi;H. Awano;K. Tanabe
本文利用自旋Seebeck效应证明了器件中的磁化相关逆自旋霍尔效应（MD-ISHE）。研究发现，热注入的自旋电流在转变为电荷电流之前，先绕着合金的磁化方向旋进。此外，发现MD-ISHE电压的符号取决于Co磁矩方向，而常规ISHE电压的符号和大小与磁化方向无关。同时，自旋旋转角估计为约12%。我们的研究结果表明，垂直磁化提供额外的对称性的ISHE和提供的优势，通过调整合金成分定制的自旋电流极化的符号。
In this paper, we demonstrate the magnetization-dependent inverse spin Hall effect (MD-ISHE) indevices using the spin Seebeck effect. It was found that a thermally injected spin current is precessed around the magnetization of thealloy before it is converted into a charge current. Furthermore, the sign of the MD-ISHE voltage was found to depend on the Co magnetic moment direction, whereas the sign and magnitude of the conventional ISHE voltage are independent of themagnetization direction. Meanwhile, the spin rotation angle was estimated to be ∼12% in. Our findings demonstrate that perpendicularly magnetizedsupplies additional symmetry to the ISHE and provides advantages in terms of tailoring the sign of the spin-current polarization through adjusting the alloy composition.