Effect of uniaxial strain on the reflectivity of graphene

F. M. D. Pellegrino, G. G. N. Angilella, R. Pucci

Published 2009-12-18Version 1

We evaluate the optical reflectivity for a uniaxially strained graphene single layer between a SiO2 substrate and air. A tight binding model for the band dispersion of graphene is employed. As a function of the strain modulus and direction, graphene may traverse one of several electronic topological transitions, characterized by a change of topology of its Fermi line. This results in features in the conductivity within the optical range, which might be observable experimentally.