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

• Autor(es): Peres, N. M. R. ; Bludov, Yuliy V. ; Ferreira, Aires ; Vasilevskiy, Mikhail
• Data: 2013
• Identificador Persistente: http://hdl.handle.net/1822/27109
• Origem: RepositóriUM - Universidade do Minho
• Assunto(s): Graphene; Surface polariton
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

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.