Electron Transport Properties of Two-Dimensional Si$_{1}$P$_{1}$ Molecular Junctions
Rui-Fang Gao, Wen-Yong Su** , Feng-Wang, Wan-Xiang Feng
School of Physics, Beijing Institute of Technology, Beijing 100081
Abstract ：We focus on two new 2D materials, i.e., monolayer and bilayer silicon phosphides (Si$_{1}$P$_{1})$. Based on the elastic-scattering Green's function, the electronic-transport properties of two-dimensional monolayer and bilayer Au-Si$_{1}$P$_{1}$-Au molecular junctions are studied. It is found that their bandgaps are narrow (0.16 eV for a monolayer molecular junction and 0.26 eV for a bilayer molecular junction). Moreover, the calculated current-voltage characteristics indicate that the monolayer molecular junction provides constant output current (20 nA) over a wide voltage range, and the bilayer molecular junction provides higher current (42 nA).
收稿日期: 2016-11-01
出版日期: 2017-01-25
:
72.90.+y
(Other topics in electronic transport in condensed matter)
73.23.-b
(Electronic transport in mesoscopic systems)
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2017, Vol. 34 
