Current-driven magnetization switching in a van der Waals ferromagnet Fe3GeTe2
/ Authors
Xiao Wang, Jian Tang, Xiuxin Xia, Congli He, Junwei Zhang, Yizhou Liu, C. Wan, C. Fang, Chenyang Guo, Wenlong Yang
and 18 more authors
Y. Guang, Xiaomin Zhang, Hongjun Xu, Jinwu Wei, Mengzhou Liao, Xiaobo Lu, Jiafeng Feng, Xiaoxi Li, Yong Peng, Hongxiang Wei, Rong Yang, D. Shi, Xixiang Zhang, Z. Han, Zhidong Zhang, Guangyu Zhang, Guoqiang Yu, Xiufeng Han
/ Abstract
Spin-orbit torque flips the perpendicular magnetic moment of a 2D van der Waals magnet. The recent discovery of ferromagnetism in two-dimensional (2D) van der Waals (vdW) materials holds promises for spintronic devices with exceptional properties. However, to use 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.
Journal: Science Advances