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

• 作 者: Guo-Bao Zhu Hui-Min Yang Yun-Hai Zhang
• 机 构: School of Physics and Electronic Engineering,Heze University,Heze 274015,China
• 出 处: 中国物理B（英文版）
• 发表日期: 2021年3期
• 关键词: photoconductivity transition metal dichalcogenide warping term

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 photoconductiv-ities 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.