Vacancy-defect scattering in Ag(111)-supported silicene interface |
| |
Authors: | Yuefei Liu Yanwu Lu |
| |
Affiliation: | Department of Physics, Beijing Jiaotong University, Beijing 100044, People''s Republic of China |
| |
Abstract: | The role of vacancy-defect scattering in electron mobility near the two-dimensional (2D) Ag(111)-supported silicene sheet interface was investigated in this paper. The interface structures of Ag(111)-supported silicene and silicene-sheet charge density were considered. Mobility limited by the vacancy-defect scattering was calculated in the order of 102–105 cm2/V?s, which was comparable with first-principle calculations and experimental results for free-standing and substrate-supported silicene. Results further showed the decay relationship between the electron mobility and vacancy density of silicene sheet. Furthermore, the influence of the Ag(111)-supported silicene sheet structure on electron mobility was confirmed through calculations. This study can contribute to the prediction of the electron mobility of other 2D graphene-like honeycomb-structure systems. |
| |
Keywords: | Ag(111)-supported silicene Vacancy Electron mobility |
本文献已被 ScienceDirect 等数据库收录! |