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arXiv · 1609.05260

Effects of electron-impurity scattering on density of states in silicene: impurity bands and band-gap narrowing

S. Y. Liu·Y. C. Zeng·X. L. Lei
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Abstract

Considering the interband correlation, we present a generalized multiple-scattering approach of Green's function to investigate the effects of electron-impurity scattering on the density of states in silicene. The reduction of energy gaps in the case of relatively high chemical potential and the transformation of split-off impurity bands into band tails for low chemical potential are found. The dependency of optical conductivity on the impurity concentration is also discussed for frequency within the terahertz regime.

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S. Y. Liu, Y. C. Zeng, X. L. Lei. 2016-09-17. Effects of electron-impurity scattering on density of states in silicene: impurity bands and band-gap narrowing. https://doi.org/10.1103/physrevb.94.235308

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