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

Autor:	Liu, S. Y., Zeng, Y. C., Lei, X. L.
Rok vydání:	2016
Předmět:	Condensed Matter - Materials Science Condensed Matter - Disordered Systems and Neural Networks Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 94, 235308 (2016)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.94.235308
Popis:	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. Comment: 10 pages, 8 figures, submitted to PRB
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1609.05260 Zobrazit plný text záznamu View this record from Arxiv