期刊
JOURNAL OF APPLIED PHYSICS
卷 128, 期 3, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0015102
关键词
-
资金
- National Natural Science Foundation of China (NNSFC) [51806072, 11804229]
- Ministry of Science and Technology of the People's Republic of China [2017YFE0100600]
In polar compounds, Frohlich interaction plays an important role in electrical transport, and it is highly dependent on the dimensionality. In two-dimensional (2D) materials, Frohlich interaction cannot be correctly described by the analytical model available for bulk materials, which prevents the employment of the state-of-the-art first-principles calculation of electrical transport based on maximally localized Wannier functions interpolation. Recently, an approximate 2D Frohlich model with screened dielectric properties is proposed. Selecting the strong polar material of monolayer InSe, we examine the accuracy of this 2D Frohlich model by comparing the electron mobility calculated using this model with that based on direct density functional perturbation theory calculations of 2D Frohlich interaction. It is found that the 2D Frohlich model can guarantee fairly good results with an advantage of tremendously reduced computational consumption. Using this model, the modulation of the electron mobility of monolayer InSe by the dielectric environment is studied. The electron mobility can be drastically enhanced by coating high-dielectric materials, with room-temperature mobility improved from about 100 mml:mspace width=.1emmml:mspace c m 2 V - 1 s - 1 to about 500 mml:mspace width=.1emmml:mspace c m 2 V - 1 s - 1, due to the strong suppression of Frohlich scattering.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据