Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6106

Electronic structure in gapped graphene with a Coulomb potential

Authors Zhu, Wei
Wang, Zhengfei
Shi, Qinwei
Szeto, K. Y.
Chen, Jie
Hou, J. G.
Issue Date 2009
Source PHYSICAL REVIEW B , v. 79, (15), 2009, Apr, 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.
Subjects
ISSN 1098-0121
Rights Physical review B © copyright 2009 American Physical Society. The Journal's web site is located at http://prb.aps.org
Language English
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