Room-Temperature, Current-Induced Magnetization Self-Switching in A Van Der Waals Ferromagnet.

Zhang, Hongrui; Chen, Xiang; Wang, Tianye; Huang, Xiaoxi; Chen, Xianzhe; Shao, Yu-Tsun; Meng, Fanhao; Meisenheimer, Peter et al. · Adv Mater · 2024

basic_science · Level V

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Abstract

2D layered materials with broken inversion symmetry are being extensively pursued as  spin source layers to realize high-efficiency magnetic switching. Such low-symmetry layered systems are, however, scarce. In addition, most layered magnets with perpendicular magnetic anisotropy show a low Curie temperature. Here, the experimental observation of spin-orbit torque magnetization self-switching at room temperature in a layered polar ferromagnetic metal, Fe<sub>2.5</sub> Co<sub>2.5</sub> GeTe<sub>2</sub> is reported. The spin-orbit torque is generated from the broken inversion symmetry along the c-axis of the crystal. These results provide a direct pathway toward applicable 2D spintronic devices.