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.
@article{arxiv.1902.05794,
title = {Current-driven magnetization switching in a van der Waals ferromagnet Fe3GeTe2},
author = {Xiao Wang and Jian Tang and Xiuxin Xia and Congli He and Junwei Zhang and Yizhou Liu and Caihua Wan and Chi Fang and Chenyang Guo and Wenlong Yang and Yao Guang and Xiaomin Zhang and Hongjun Xu and Jinwu Wei and Mengzhou Liao and Xiaobo Lu and Jiafeng Feng and Xiaoxi Li and Yong Peng and Hongxiang Wei and Rong Yang and Dongxia Shi and Xixiang Zhang and Zheng Han and Zhidong Zhang and Guangyu Zhang and Guoqiang Yu and Xiufeng Han},
journal= {arXiv preprint arXiv:1902.05794},
year = {2019}
}