2022/12/29 by Xiaomiao Yin, Yin, Xiaomiao, Lujun Wei +17
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Multiferroics and related materials
paper · pdf · doi:10.48550/arxiv.2212.14281
openalex publication_date 2022/12/29 · openalex created_date 2023/01/06 · openalex updated_date 2026/07/28
Spin-orbit torque (SOT) provides an efficient way to achieve charge-to-spin conversion and can switch perpendicular magnetization, which is essential for designing novel energy-efficient spintronic devices. An out-of-plane SOT could directly switch perpendicular magnetization. Encouragingly, field-free perpendicular magnetization switching of a two-dimensional (2D) material WTe2/ferromagnet (FM) bilayer has been reported recently, but the working temperature (200 K) is below room temperature. Here, we report the field-free perpendicular magnetization switching carried out at room temperature on a WTe2/Pt/Co/Pt multilayer film. Controlled experiments confirm that the field-free switching is caused by the in-plane antidamping SOT generated in the Pt/Co/Pt multilayer and the out-of-plane generated in the a-axis WTe2 thin film. This work offers a potential method for using spintronic devices made of two-dimensional materials at room temperature.