Spin depolarization dynamics of WSe<sub>2</sub> bilayer

Spin depolarization dynamics of WSe₂ bilayer

Niu Binghui^{1, 2}, Ye Jialiang^{1, 2}, Li Ting^{1, 2}, Li Ying^{1, 2}, Zhang Xinhui^{1, 2, †}

(color online) (a) Optical microscopic image of WSe₂ flakes. (b) Cartoon of WSe₂ bilayer with its spin, valley, and layer configuration depicted. The upper layer is 180° rotated in-plane with respect to the lower layer. (c) Sketch of the time-resolved Kerr rotation (TRKR) setup. F1, F2, and F3 represent three kinds of optical filters.