凝聚态物理
外延
材料科学
自旋(空气动力学)
铁磁性
各向异性
自旋轨道相互作用
物理
薄膜
自旋电子学
作者
N. Zhao,A. Sud,Hiroaki Sukegawa,Sachio Komori,K. Rogdakis,Kazuto Yamanoi,J. Patchett,Jason W. A. Robinson,Chiara Ciccarelli,Hidekazu Kurebayashi
出处
期刊:arXiv: Materials Science
日期:2020-12-04
被引量:1
标识
DOI:10.1103/physrevmaterials.5.014413
摘要
We report current-induced spin torques in epitaxial NiMnSb films on a commercially available epi-ready GaAs substrate. The NiMnSb was grown by co-sputtering from three targets using optimised parameter. The films were processed into micro-scale bars to perform current-induced spin-torque measurements. Magnetic dynamics were excited by microwave currents and electric voltages along the bars were measured to analyse the symmetry of the current-induced torques. We found that the extracted symmetry of the spin torques matches those expected from spin-orbit interaction in a tetragonally distorted half-Heusler crystal. Both field-like and damping-like torques are observed in all the samples characterised, and the efficiency of the current-induced torques is comparable to that of ferromagnetic metal/heavy metal bilayers.
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