Journal
VACUUM
Volume 83, Issue 10, Pages 1248-1252Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2009.03.018
Keywords
Materials; Carbon; Graphene; Electronic properties; Dirac; Fine structure constant; Band structure; Transport
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We present a discussion of some of the physical properties of graphene and its bilayer. In particular, we focus our attention on the calculation of the transparency of graphene and on the dependence of the energy gap of the biased graphene bilayer on the electronic density. We show that the transparency of graphene is controlled by the Value of the fine structure constant over a frequency range from the infrared to the ultra-violet. We derive the dependence of the energy gap of the graphene bilayer on the external applied electric field. (C) 2009 Elsevier Ltd. All rights reserved.
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