Anisotropic photoconductivity in graphene

Abstract

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.