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Multifunctional 2D CuSe monolayer nanodevice

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arxiv 1904.08047 v1 pith:5QGY2OWS submitted 2019-04-17 cond-mat.mes-hall

Multifunctional 2D CuSe monolayer nanodevice

Yipeng An , Yusheng Hou , Hui Wang , Jie Li , Ruqian Wu , Chengyan Liu , Tianxing Wang , Jutao Jiao This is my paper
classification cond-mat.mes-hall
keywords cusealongdirectionsmonolayermultifunctionalabsorptionanisotropyapplications
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In a very recent experimental work [Gao et al., 2018 Adv. Mater. 30, 1707055], a graphene-like CuSe monolayer was realized. Motivated by this success, we performed first-principles calculations to investigate its electronic transport and photoelectronic properties. We find that the CuSe ML shows a strong electrical anisotropy, and its current-voltage (I-V) curves along the zigzag and armchair directions are noticeably different. The CuSe ML also displays a useful negative differential resistance (NDR) effect along the both directions when the bias is beyond 1.0 V. Moreover, it has a large photon absorption to orange light. Our study suggests that CuSe ML is a multifunctional material and has various potential applications in electrical-anisotropy-based, NDR-based, and even optical nanodevices.

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