| Nonlinear photoncurrent in transition metal dichalcogenide with warping term under illuminating of light |
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| 作者姓名： | 朱国宝 杨慧敏 张运海 |
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| 作者单位： | School of Physics and Electronic Engineering |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant No.11504095);the Science and Technology Program for Institutions of Higher Learning in Shandong Province,China(Grant No.J18KA224). |
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| 摘 要： | 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.
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| 关 键 词： | PHOTOCONDUCTIVITY transition metal dichalcogenide warping term |
Nonlinear photoncurrent in transition metal dichalcogenide with warping term under illuminating of light |
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| Guo-Bao Zhu,Hui-Min Yang,Yun-Hai Zhang.Nonlinear photoncurrent in transition metal dichalcogenide with warping term under illuminating of light[J].Chinese Physics B,2021(3). |
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| Authors: | Guo-Bao Zhu Hui-Min Yang Yun-Hai Zhang |
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| Affiliation: | (School of Physics and Electronic Engineering,Heze University,Heze 274015,China) |
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| 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. |
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