Nonlinear photoncurrent in transition metal dichalcogenide with warping term under illuminating of light

• Published in: Chinese physics B Vol. 30; no. 3; pp. 37301 - 496
• Main Authors: Zhu, Guo-Bao, Yang, Hui-Min, Zhang, Yun-Hai
• Format: Journal Article
• Language: English
• Published: School of Physics and Electronic Engineering,Heze University,Heze 274015,China 01.03.2021
• Subjects: photoconductivity; transition metal dichalcogenide; warping term
• ISSN: 1674-1056; 2058-3834
• DOI: 10.1088/1674-1056/abc53c

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.