Quasi-static plasmon resonances in a graphene ribbon in the infrared range

Resumo

The 2D problem of diffraction of a plane electromagnetic wave diffraction by a graphene ribbon is considered for the case of the TM polarization. Quasi-static plasmon resonanses are investigated with the use of rigorous numerical methods. The surface currents and scattering and absorption cross-sections are calculated. It is shown that, owing to the high Q-factor, multipole plasmon resonances appear not only in the near field but also in the far field.