Current-driven magnetization switching in a van der Waals ferromagnet Fe3GeTe2

Xiao Wang; Jian Tang; Xiuxin Xia; Congli He; Junwei Zhang; Yizhou Liu; Caihua Wan; Chi Fang; Chenyang Guo; Wenlong Yang; Yao Guang; Xiaomin Zhang; Hongjun Xu; Jinwu Wei; Mengzhou Liao; Xiaobo Lu; Jiafeng Feng; Xiaoxi Li; Yong Peng; Hongxiang Wei; Rong Yang; Dongxia Shi; Xixiang Zhang; Zheng Han; Zhidong Zhang; Guangyu Zhang; Guoqiang Yu; Xiufeng Han

arXiv · 1902.05794

Current-driven magnetization switching in a van der Waals ferromagnet Fe3GeTe2

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Abstract

The recent discovery of ferromagnetism in two-dimensional (2D) van der Waals (vdW) materials holds promises for novel spintronic devices with exceptional performances. However, in order to utilize 2D vdW magnets for building spintronic nanodevices such as magnetic memories, key challenges remain in terms of effectively switching the magnetization from one state to the other electrically. Here, we devise a bilayer structure of Fe3GeTe2/Pt, in which the magnetization of few-layered Fe3GeTe2 can be effectively switched by the spin-orbit torques (SOTs) originated from the current flowing in the Pt layer. The effective magnetic fields corresponding to the SOTs are further quantitatively characterized using harmonic measurements. Our demonstration of the SOT-driven magnetization switching in a 2D vdW magnet could pave the way for implementing low-dimensional materials in the next-generation spintronic applications.

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Xiao Wang, Jian Tang, Xiuxin Xia, Congli He, Junwei Zhang, Yizhou Liu, Caihua Wan, Chi Fang, Chenyang Guo, Wenlong Yang, Yao Guang, Xiaomin Zhang, Hongjun Xu, Jinwu Wei, Mengzhou Liao, Xiaobo Lu, Jiafeng Feng, Xiaoxi Li, Yong Peng, Hongxiang Wei, Rong Yang, Dongxia Shi, Xixiang Zhang, Zheng Han, Zhidong Zhang, Guangyu Zhang, Guoqiang Yu, Xiufeng Han. 2019-02-15. Current-driven magnetization switching in a van der Waals ferromagnet Fe3GeTe2. https://arxiv.org/abs/1902.05794

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