Robust optical conductivity in gapped graphene

Details Robust optical conductivity in gapped graphene Robust optical conductivity in gapped graphene

2010-01-19

arxiv.org/abs/1001.3366v1

Physics

Condensed Matter

Materials Science

5 pages, 4 figures

Scientific paper

We study the optical conductivity in the low-energy regime of gapped mono-
and bilayer graphene. A scaling relation is found, in which the four parameters
frequency, gap, Fermi energy and temperature appear only as combination of
three independent parameters. The ratio of the optical conductivity of bilayer
and mononlayer graphene is exactly 2.

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