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PhysRevLett.128.217702.pdf
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Author
Zhu, D.Zhang, T.
Fu, X.
Hao, R.
Hamzić, A.
Yang, H.
Zhang, X.
Zhang, H.
Du, A.
Xiong, D.
Shi, K.
Yan, S.
Zhang, S.
Fert, A.
Zhao, W.
Affiliation
Department of Physics, University of ArizonaIssue Date
2022
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American Physical SocietyCitation
Zhu, D., Zhang, T., Fu, X., Hao, R., Hamzić, A., Yang, H., Zhang, X., Zhang, H., Du, A., Xiong, D., Shi, K., Yan, S., Zhang, S., Fert, A., & Zhao, W. (2022). Sign Change of Spin-Orbit Torque in Pt/NiO/CoFeB Structures. Physical Review Letters, 128(21).Journal
Physical Review LettersRights
Copyright © 2022 American Physical Society.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Antiferromagnetic insulators have recently been proved to support spin current efficiently. Here, we report the dampinglike spin-orbit torque (SOT) in Pt/NiO/CoFeB has a strong temperature dependence and reverses the sign below certain temperatures, which is different from the slight variation with temperature in the Pt/CoFeB bilayer. The negative dampinglike SOT at low temperatures is proposed to be mediated by the magnetic interactions that tie with the "exchange bias"in Pt/NiO/CoFeB, in contrast to the thermal-magnon-mediated scenario at high temperatures. Our results highlight the promise to control the SOT through tuning the magnetic structure in multilayers. © 2022 American Physical Society.Note
Immediate accessISSN
0031-9007PubMed ID
35687442Version
Final published versionae974a485f413a2113503eed53cd6c53
10.1103/PhysRevLett.128.217702
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