1205.4867 (N. M. R. Peres et al.)

Light scattering by a medium with a spatially modulated optical
conductivity: the case of graphene    [PDF]

N. M. R. Peres, A. Ferreira, Yu. V. Bludov, M. I. Vasilevskiy

We describe light scattering from a graphene sheet having a modulated optical conductivity. We show that such modulation enables the excitation of surface plasmon-polaritons by an electromagnetic wave impinging at normal incidence. The resulting surface plasmon-polaritons are responsible for a substantial increase of electromagnetic radiation absorption by the graphene sheet. The origin of the modulation can be due either to a periodic strain field or to adatoms (or absorbed molecules) with a modulated adsorption profile.

View original: http://arxiv.org/abs/1205.4867