Current-induced magnetization switching in a chemically disordered A1 CoPt single layer. (8th February 2021)

• Record Type: Journal Article
• Authors: Chen, Zehan; Liu, Lin; Ye, Zhixiang; Chen, Zhiren; Zheng, Hongnan; Jia, Wei; Zeng, Qi; Wang, Ning; Xiang, Boyuan; Lin, Tao; Liu, Jing; Qiu, Mingxia; Li, Shunpu; Shi, Ji; Han, Peigang; An, Hongyu
• Is Part Of: Applied physics express. Volume 14:Number 3(2021)
• Publication Date: 2021-02-08
• Subjects: spin-orbit torque -- magnetization switching -- CoPt -- perpendicular magnetic anisotropy -- spintronics; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/abdcd5
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: We report the first demonstration of current-induced magnetization switching in a perpendicularly magnetized A1 CoPt single layer. We show that good perpendicular magnetic anisotropy can be obtained over a wide composition range of A1 Co1−x Ptx single layers, which allows the fabrication of a perpendicularly magnetized CoPt single layer with a composition gradient that breaks the inversion symmetry of the structure. By fabricating a CoPt single layer with a gradient, we were able to evaluate spin-orbit torque (SOT) efficiency and successfully realize SOT-induced magnetization switching. Our study provides an approach for realizing current-induced magnetization in ferromagnetic single layers without attaching SOT source materials.