Abstract We investigate the photoconductivities of injection current and the shift current in transition metal dichalcogenide with warping term in the presence of sublattice potential and spin orbit coupling. The system shows the valley photoconductivities of injection current and the photoconductivities of shift current. It is found that the warping term and the geometric tensor play a critical role in the system, which are responsible for the photoconductivities. Due to the interplay between the sublattice potential and the spin orbit coupling, the photoconductivities can be tuned. Furthermore, the effect of warping term on geometric tensor and the amplitude of the photoconductivities are also discussed.
(Optical properties of bulk materials and thin films)
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11504095) and the Science and Technology Program for Institutions of Higher Learning in Shandong Province, China (Grant No. J18KA224).
Guo-Bao Zhu(朱国宝), Hui-Min Yang(杨慧敏, and Yun-Hai Zhang(张运海) Nonlinear photoncurrent in transition metal dichalcogenide with warping term under illuminating of light 2021 Chin. Phys. B 30 037301
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