Open AccessAnalytical model for plasmon modes in graphene-coated nanowire
Author(s) -
Yixiao Gao,
Guobin Ren,
Bofeng Zhu,
Huaiqing Liu,
Yudong Lian,
Shuisheng Jian
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.024322
Subject(s) - plasmon , graphene , nanowire , materials science , permittivity , surface plasmon , optics , dispersion relation , dielectric , dispersion (optics) , optoelectronics , radius , surface plasmon polariton , condensed matter physics , nanotechnology , physics , computer security , computer science
An analytical model for plasmon modes in graphene-coated dielectric nanowire is presented. Plasmon modes could be classified by the azimuthal field distribution characterized by a phase factor exp(imφ) in the electromagnetic field expression and eigen equation of dispersion relation for plasmon modes is derived. The characteristic of plasmon modes could be tuned by changing nanowire radius, dielectric permittivity of nanowire and chemical potential of graphene. The proposed model provides a fast insight into the mode behavior of graphene-coated nanowire, which would be useful for applications based on graphene plasmonics in cylindrical waveguide.