Numerical Simulation of Spin Torque Induced by Spin Hall Effect in CuPt/Fe Heterostructure
Numerical Simulation of Spin Torque Induced by Spin Hall Effect in CuPt/Fe Heterostructure
复制标题
CuPt/Fe 异质结构中自旋霍尔效应引起的自旋扭矩的数值模拟
DOI：
10.4028/www.scientific.net/ssp.233-234.407
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
A. Vedyaev
中科院分区：
文献类型：
--
作者：
T. Andrianov;Y. Gritsenko;N. Strelkov;N. Ryzhanova;A. Vedyaev
使用线性 Levy-Fert 模型对 CuPt/Fe 异质结构中的自旋输运和自旋累积分布进行了数值研究。结果表明，CuPt 层中的自旋霍尔效应会在相邻铁磁层中产生非平衡自旋累积。自旋累积矢量与铁磁层磁化方向不共线，导致自旋转移矩的出现。计算了该扭矩的绝对值和角度相关性，并且证明对于电流来说，扭矩值足以操纵铁磁层的磁化。
Spin transport and distribution of spin accumulation in CuPt/Fe heterostructure are numerically investigated, using linearized Levy-Fert model. It was shown that Spin Hall Effect in CuPt layer produces non-equilibrium spin accumulation in adjacent ferromagnetic layer. Spin accumulation vector is not collinear with the direction of magnetization in ferromagnetic layer which leads to the appearance of spin transfer torque. The absolute values and angular dependence of this torque were calculated and it was demonstrated that for the current the values of torques are sufficient for manipulation of magnetization of ferromagnetic layer.