Anisotropic photoconductivity in graphene
Institute for Theoretical Physics, University of Regensburg - D-93040 Regensburg, Germany, EU
Accepted: 6 September 2011
We investigate the photoconductivity of graphene within the relaxation time approximation. In the presence of the inter-band transitions induced by the linearly polarized light the photoconductivity turns out to be highly anisotropic due to the pseudospin selection rule for Dirac-like carriers. The effect can be observed in clean undoped graphene samples and can be utilized for light polarization detection.
PACS: 78.67.Wj – Optical properties of graphene / 73.50.Gr – Charge carriers: generation, recombination, lifetime, trapping, mean free paths / 73.50.Pz – Photoconduction and photovoltaic effects
© EPLA, 2011