Spin-Orbit Torque Induced Spatial Asymmetric Switching in Ferrimagnets

	Spin-Orbit Torque Induced Spatial Asymmetric Switching in Ferrimagnets
	Kong ZH(孔震航)1 ; Xu ZD(徐正德)1 ; Zhang X(张雪)1 ; Zhu ZF(祝智峰)1,2
	2024-09
会议录名称	EXTENDED ABSTRACTS OF THE 2024 INTERNATIONAL CONFERENCE ON SOLID STATE DEVICES AND MATERIALS
发表状态	已发表
摘要	Efficient spin-orbit torque (SOT) switching is of crucial importance for magnetic random-access memory. In this work, we study the SOT switching of ferrimagnetic alloy, which permits ultrafast switching in picoseconds. We find that the magnetization is first reversed at the corner of the sample, which then propagates to the entire sample through domain-wall motion. We show that the location of this corner exhibits both left-right and top-down asymmetry, and it is uniquely determined by the polarity of current and external field (Hx). In the ferromagnetic system, previous studies have concluded that the top-down asymmetry is induced by the field-like SOT, which is absent in our system. We propose that the damping-like SOT, Dzyaloshinskii-Moriya interaction, and Hx are sufficient to explain the findings. This work improves our understanding of the physics behind the SOT switching.
会议名称	International Conference on Solid State Devices and Materials
会议地点	日本姬路
会议日期	2024-9-1
学科门类	理学 ; 理学::物理学
文献类型	会议论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/452321
专题	信息科学与技术学院_硕士生信息科学与技术学院_博士生信息科学与技术学院_PI研究组_祝智峰组
作者单位	1.School of Information Science and Technology, ShanghaiTech University, Shanghai, China 201210 2.Shanghai Engineering Research Center of Energy Efficient and Custom AI IC, Shanghai, China 201210
第一作者单位	信息科学与技术学院
第一作者的第一单位	信息科学与技术学院
推荐引用方式 GB/T 7714	Kong ZH,Xu ZD,Zhang X,et al. Spin-Orbit Torque Induced Spatial Asymmetric Switching in Ferrimagnets[C],2024.