Exact solution for square-wave grating covered with graphene : surface plasmons...

• Author(s): Peres, N. M. R. ; Bludov, Yuliy V. ; Ferreira, Aires ; Vasilevskiy, Mikhail
• Date: 2013
• Persistent ID: http://hdl.handle.net/1822/27109
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Graphene; Surface polariton
• Document Type: Article
• Language: English

Description

We provide an analytical solution to the problem of scattering of electromagnetic radiation by a square-wave grating with a flat graphene sheet on top.We show that for deep groves there is a strong plasmonic response, with light absorption in the graphene sheet reaching more than 45% due to the excitation of surface plasmon-polaritons. The case of a grating with a graphene sheet presenting an induced periodic modulation of the conductivity is also discussed.