Domain Wall Dynamics in Asymmetric Stacks: The Roles of Rashba Field and the Spin Hall Effect
Domain Wall Dynamics in Asymmetric Stacks: The Roles of Rashba Field and the Spin Hall Effect
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非对称堆栈中的畴壁动力学：Rashba 场和自旋霍尔效应的作用
DOI：
10.1109/tmag.2013.2238899
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发表时间：
2013
影响因子：
2.1
通讯作者：
G. Finocchio
中科院分区：
文献类型：
--
作者：
E. Martínez;G. Finocchio
利用微磁模拟和一维模型分析了自旋轨道力矩(Rashba和/或自旋霍尔效应)对电流驱动的沿高垂直磁晶各向异性堆栈的磁畴壁运动的影响。研究表明，在存在Rashba自旋轨道力矩的情况下，磁畴壁的运动既可以是顺向电流的方向，也可以是与电流相反的方向，这取决于自旋霍尔效应的强度，因此，它指出这两个自旋轨道力矩可能是描述最近的实验的基本成分。
The influence of spin-orbit torques, either Rashba and/or spin Hall effects, on the current-driven domain wall motion along high perpendicular magnetocrystalline anisotropy stacks, is analyzed by means of micromagnetic simulations and the one-dimensional model. The study indicates that the domain wall motion can be either in the direction of the current or opposing to it depending on the strength of the spin Hall effect in the presence of the Rashba spin-orbit torque, and therefore, it points out that both spin-orbit torques could be essential ingredients to describe recent experiments.