Enhanced photocurrent and spin current in Two-Dimensional MnNCl-MnNI lateral heterostructures

被引：0
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作者：
Zhu, Yudong [1 ]
Qu, Junyang [1 ]
Li, Dan [1 ]
Yan, Yue [1 ]
Liu, Bin [1 ]
机构：
[1] Department of Physics, Beijing Jiaotong University, Beijing,100044, China
来源：
Chemical Physics Letters | 2024年 / 857卷
关键词：
First-principles calculations and quantum transport simulations were performed to investigate the photogalvanic effect (PGE) in the high magnetic transition temperature ferromagnetic two-dimensional (2D) semiconductor MnNCl and the 2D lateral MnNI-MnNCl heterostructure. The MnNI-MnNCl heterostructure exhibits significantly enhanced non-centrosymmetric properties; resulting in increased PGE photocurrent and spin current around 0.4 eV. Compared to MnNCl; the photocurrent is amplified by 4–6 orders of magnitude and demonstrates excellent polarization sensitivity; with an extinction ratio reaching 83.92. These results underscore the potential of MnNCl-MnNI lateral heterostructures for use in self-powered; polarization-sensitive infrared detectors. © 2024;
D O I：
10.1016/j.cplett.2024.141735
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