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Electronic structure in gapped graphene with a Coulomb potential

Authors Zhu, Wei HKUST affiliated (currently or previously)
Wang, Zhengfei
Shi, Qinwei HKUST affiliated (currently or previously)
Szeto, K.Y. View this author's profile
Chen, Jie
Hou, J.G.
Issue Date 2009
Source Physical Review B , v. 79, (15), April 2009, Article number 155430
Summary In this paper, we numerically study bound electron states induced by long-range Coulomb impurities in gapped graphene and quasibound states in the supercritical region based on the lattice model. We present a detailed comparison between our numerical calculations and the prediction of quantum electrodynamics 2+1(QED) continuum model. Furthermore, the supercritical charge has been determined by both the lattice model and the continuum model. The numerical results show that the behavior of quasibound state is consistent with the prediction using Fano’s formalism.
ISSN 1098-0121
Rights © 2009 American Physical Society
Language English
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