Spin-orbit torque switching of chiral magnetization across a synthetic antiferromagnet

被引:23
|
作者
Wang, Kang [1 ]
Qian, Lijuan [1 ]
Ying, See-Chen [1 ]
Xiao, Gang [1 ]
机构
[1] Brown Univ, Dept Phys, Providence, RI 02912 USA
基金
美国国家科学基金会;
关键词
ANISOTROPY; SKYRMIONS;
D O I
10.1038/s42005-020-00513-z
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The interfacial Dzyaloshinskii-Moriya interaction (DMI) holds promises for design and control of chiral spin textures in low-dimensional magnets with efficient current-driven dynamics. Recently, an interlayer DMI has been found to exist across magnetic multilayers with a heavy-metal spacer between magnetic layers. This opens the possibility of chirality in these three-dimensional magnetic structures. Here we show the existence of the interlayer DMI in a synthetic antiferromagnetic multilayer with both inversion and in-plane asymmetry. We analyse the interlayer DMI's effects on the magnetization and the current-induced spin-orbit torque (SOT) switching of magnetization through a combination of experimental and numerical studies. The chiral nature of the interlayer DMI leads to an asymmetric SOT switching of magnetization under an in-plane magnetic field. Our work paves the way for further explorations on controlling chiral magnetizations across magnetic multilayers through SOTs, which can provide a new path in the design of SOT devices. .
引用
收藏
页数:7
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