磁化
自旋电子学
凝聚态物理
铁磁性
克尔效应
轨道磁化
材料科学
金属
联轴节(管道)
磁场
物理
磁各向异性
量子力学
非线性系统
冶金
作者
Qikun Huang,Senmiao Liu,Tianxiang Yang,Ronghuan Xie,Li Cai,Qiang Cao,Weiming Lü,Lihui Bai,Yue Tian,Yan Shen
出处
期刊:Nano Letters
[American Chemical Society]
日期:2023-11-29
卷期号:23 (23): 11323-11329
标识
DOI:10.1021/acs.nanolett.3c03972
摘要
The orbital angular momentum (OAM) generation as well as its associated orbital torque is currently a matter of great interest in spin–orbitronics and is receiving increasing attention. In particular, recent theoretical work predicts that the oxidized light metal Cu can serve as an efficient OAM generator through its surface orbital Rashba effect. Here, for the first time, the crucial current-induced magnetic-field-free in-plane magnetization reversal is experimentally demonstrated in CoFeB/CuOx bilayers without any heavy elements. We show that the critical current density can be comparable to that of strong spin–orbit coupling systems with heavy metals (Pt and Ta) and that the magnetization reversal mechanism is governed by coherent rotation in the grains through the second-harmonic and magneto-optical Kerr effect measurements. Our results indicate that light metal oxides can play an equally important role as heavy metals in magnetization reversal, broadening the choice of materials for engineering spintronic devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI