Optical spectrum of ferrovalley materials: A case study of Janus H-VSSe
Chao-Bo 朝波 Luo 罗,
Wen-Chao 文超 Liu 刘,
Xiang-Yang 向阳 Peng 彭
Abstract:As opposed to the prototypical MoS2 with centroasymmetry, Janus ferrovalley materials such as H-VSSe is less symmetric with the mirror symmetry and time reversal symmetry broken, and hence possess spontaneous valley polarization and strong ferroelasticity. The optical transition is an important means to excite the valley carriers. We investigated the optical spectrum of H-VSSe by using the many-body perturbation-based GW approach and solving the Bethe-Salpeter equation (BSE) to include the electron-hole intera… Show more
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