1. Robust spin torque switching of noncollinear antiferromagnet Mn3Sn.
- Author
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Xu, Teng, Bai, Hao, Dong, Yiqing, Zhao, Le, Zhou, Heng-An, Zhang, Junwei, Zhang, Xi-Xiang, and Jiang, Wanjun
- Subjects
ANTIFERROMAGNETIC materials ,ANOMALOUS Hall effect ,CRYSTAL orientation ,THIN films ,TORQUE ,SPIN-orbit interactions - Abstract
Electrical switching of topological antiferromagnetic states in Mn
3 Sn thin films has been a subject of active investigation. However, dependences of switching behaviors on the film thickness, external field, and crystal orientation remain to be fully explored, which motivate the present study. In this work, (11 2 ̄ 0) -orientated Mn3 Sn thin films are fabricated on sapphire substrates, in which a large anomalous Hall effect over a wide temperature range (270–400 K) can be identified. The current-induced spin–orbit torques (SOTs) are utilized to electrically manipulate the topological antiferromagnetic states in Mn3 Sn/Pt bilayers. The robust SOT switching can be realized in Mn3 Sn films with thicknesses up to 100 nm and with in-plane fields up to 1200 mT. Furthermore, SOT switching behaviors that are independent of the choice of crystal orientations are clearly revealed. Our results could be useful for implementing Mn3 Sn films for efficient and stable antiferromagnetic spintronics. [ABSTRACT FROM AUTHOR]- Published
- 2023
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