Spin-Orbit Torque and Current-Driven Switching in Pt100-yTby/Co/AlOx Trilayers

doi:10.1002/aelm.202300726

IMR OpenIR

	Spin-Orbit Torque and Current-Driven Switching in Pt_100-yTb_y/Co/AlO_x Trilayers
	Wu, Jinxiang 1,2; Zhao, Xiaotian 1; Liu, Wei 1; Li, Yang 1,2; Liu, Long 1; Ju, Hongzhan 1,2; Song, Yuhang 1; Ma, Jun 1,2; Zhang, Zhidong 1
通讯作者	Zhao, Xiaotian(xtzhao@imr.ac.cn) ; Liu, Wei(wliu@imr.ac.cn)
	2024-01-14
发表期刊	ADVANCED ELECTRONIC MATERIALS
ISSN	2199-160X
页码	8
摘要	To decrease the energy consumption for the electrical manipulation of magnetization, the enhancement of the spin Hall effect through alloying is widely investigated, but the use of rare earth elements is rarely mentioned. This work reports the modification of the spin Hall effect on Pt by doping rare earth Tb atoms. The spin-orbit torque (SOT) performance is significantly enhanced in Pt100-yTby alloyed heavy metal (HM) layer. Compared with the Tb-free sample, the damping-like effective field per unit current density increases to 1.9 times in the samples with Tb content between 5% and 10%. The critical current density for magnetization reversal is greatly reduced by 65% in a device with Pt87Tb13 HM layer and the in-plane assistant field as small as +/- 20 Oe is sufficient for the deterministic switching in the same device. By magneto-optical Kerr effect imaging, it is confirmed that the increased in-plane field can effectively compensate the Dzyaloshinskii-Moriya interaction (DMI), which not only helps to reduce the critical current, but also facilitates the domain wall motion and is beneficial for the switching process. All results show that the Pt-Tb alloy is a competitive candidate for low-power spintronic devices.
关键词	current-induced magnetization switching domain wall motion Dzyaloshinskii-Moriya interaction Pt-Tb alloy spin-orbit torque
资助者	National Natural Science Foundation of China ; National Nature Science Foundation of China
DOI	10.1002/aelm.202300726
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52031014] ; National Natural Science Foundation of China[52171196] ; National Natural Science Foundation of China[51971219] ; National Natural Science Foundation of China[52271193] ; National Nature Science Foundation of China
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001143285600001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183581
专题	中国科学院金属研究所
通讯作者	Zhao, Xiaotian; Liu, Wei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wu, Jinxiang,Zhao, Xiaotian,Liu, Wei,et al. Spin-Orbit Torque and Current-Driven Switching in Pt_100-yTb_y/Co/AlO_x Trilayers[J]. ADVANCED ELECTRONIC MATERIALS,2024:8.
APA	Wu, Jinxiang.,Zhao, Xiaotian.,Liu, Wei.,Li, Yang.,Liu, Long.,...&Zhang, Zhidong.(2024).Spin-Orbit Torque and Current-Driven Switching in Pt_100-yTb_y/Co/AlO_x Trilayers.ADVANCED ELECTRONIC MATERIALS,8.
MLA	Wu, Jinxiang,et al."Spin-Orbit Torque and Current-Driven Switching in Pt_100-yTb_y/Co/AlO_x Trilayers".ADVANCED ELECTRONIC MATERIALS (2024):8.