%0 Journal Article
%T Strongly anisotropic Dirac quasiparticles in irradiated graphene
%A S. V. Syzranov
%A Ya. I. Rodionov
%A K. I. Kugel
%A F. Nori
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevB.88.241112
%X We study quasiparticle dynamics in graphene exposed to a linearly-polarized electromagnetic wave of very large intensity. Low-energy transport in such system can be described by an effective time-independent Hamiltonian, characterized by multiple Dirac points in the first Brillouin zone. Around each Dirac point the spectrum is anisotropic: the velocity along the polarization of the radiation significantly exceeds the velocity in the perpendicular direction. Moreover, in some of the points the transverse velocity oscillates as a function of the radiation intensity. We find that the conductance of a graphene p-n junction in the regime of strong irradiation depends on the polarization as $G(\theta)\propto|\sin\theta|^{3/2}$, where $\theta$ is the angle between the polarization and the p-n interface, and oscillates as a function of the radiation intensity.
%U http://arxiv.org/abs/1309.2659v1