Field-free spin-orbit torque switching induced by interlayer exchange coupling in Pt/Co/Ru/Ni/Pt multilayer

doi:10.1063/5.0077515

CORC > 金属研究所 > 中国科学院金属研究所

	Field-free spin-orbit torque switching induced by interlayer exchange coupling in Pt/Co/Ru/Ni/Pt multilayer
	Dai, Zhiming 1,2,3; Liu, Wei 3; Zhao, Xiaotian 3; Liu, Long 3; Song, Yuhang 3; Zhang, Zhidong 3
刊名	JOURNAL OF APPLIED PHYSICS
	2021-12-28
卷号	130 期号:24 页码:8
ISSN号	0021-8979
DOI	10.1063/5.0077515
通讯作者	Liu, Wei(wliu@imr.ac.cn)
英文摘要	High-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.
资助项目	State 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研究方向	Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:000733063400002
资助机构	State Key Project of Research and Development of China ; National Nature Science Foundation of China ; Jiangsu Universities Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167265]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Wei
作者单位	1.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
推荐引用方式 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.