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Field-free spin-orbit torque switching induced by interlayer exchange coupling in Pt/Co/Ru/Ni/Pt multilayer
Dai, Zhiming1,2,3; Liu, Wei3; Zhao, Xiaotian3; Liu, Long3; Song, Yuhang3; Zhang, Zhidong3
Corresponding AuthorLiu, Wei(wliu@imr.ac.cn)
2021-12-28
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume130Issue:24Pages:8
AbstractHigh-efficient operation of spin-orbit torque (SOT) is central for the exciting field of spin-orbitronics. To realize a deterministic field-free SOT switching, here, we investigate the enhancement mechanism of SOT with the interlayer exchange coupling in a Pt/Co/Ru/Ni/Pt multilayer. We find that the decrease of the domain wall energy in an interlayer exchange coupling system is the pivotal reason for achieving current-induced field-free domain wall switching. Comparing with the direct ferromagnetic couplings, the switching ratio and efficiency present a significant improvement in the interlayer exchange coupling system. Combining micromagnetic simulations and magneto-optical Kerr effect measurements, the domain wall motions are investigated and the switching mechanism is confirmed to be the domain wall depinning regime. Furthermore, the SOT switching direction is proven to be dominated by the field-modulated domain wall motions. This work paves a potential way toward practical spin-orbit torque-based memory, oscillating, and logic devices.
Funding OrganizationState Key Project of Research and Development of China ; National Nature Science Foundation of China ; Jiangsu Universities Natural Science Foundation
DOI10.1063/5.0077515
Indexed BySCI
Language英语
Funding ProjectState Key Project of Research and Development of China[2017YFA0206302] ; National Nature Science Foundation of China[52031014] ; National Nature Science Foundation of China[51771198] ; National Nature Science Foundation of China[52171196] ; National Nature Science Foundation of China[51801212] ; Jiangsu Universities Natural Science Foundation[21KJB140017]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000733063400002
PublisherAIP Publishing
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/167266
Collection中国科学院金属研究所
Corresponding AuthorLiu, Wei
Affiliation1.Huaiyin Normal Univ, Dept Phys, Huaian 223300, Peoples R China
2.Huaiyin Normal Univ, Jiangsu Key Lab Modern Measurement Technol & Inte, Huaian 223300, Peoples R China
3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Dai, Zhiming,Liu, Wei,Zhao, Xiaotian,et al. Field-free spin-orbit torque switching induced by interlayer exchange coupling in Pt/Co/Ru/Ni/Pt multilayer[J]. JOURNAL OF APPLIED PHYSICS,2021,130(24):8.
APA Dai, Zhiming,Liu, Wei,Zhao, Xiaotian,Liu, Long,Song, Yuhang,&Zhang, Zhidong.(2021).Field-free spin-orbit torque switching induced by interlayer exchange coupling in Pt/Co/Ru/Ni/Pt multilayer.JOURNAL OF APPLIED PHYSICS,130(24),8.
MLA Dai, Zhiming,et al."Field-free spin-orbit torque switching induced by interlayer exchange coupling in Pt/Co/Ru/Ni/Pt multilayer".JOURNAL OF APPLIED PHYSICS 130.24(2021):8.
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