Plasmon Excitations for Encapsulated Graphene
Mesoscale and Nanoscale Physics
2016-05-25 v2
Abstract
We have developed an analytical formulation to calculate the plasmon dispersion relation for a two-dimensional layer which is encapsulated within a narrow spatial gap between two bulk half-space plasmas. This is based on a solution of the inverse dielectric function integral equation within the random-phase approximation (RPA). We take into account the nonlocality of the plasmon dispersion relation for both gapped and gapless graphene as the sandwiched two-dimensional (2D) semiconductor plasma. The associated nonlocal graphene plasmon spectrum coupled to the "sandwich" system is exhibited in density plots, which show a linear mode and a pair of depolarization modes shifted from the bulk plasma frequency.
Cite
@article{arxiv.1601.01373,
title = {Plasmon Excitations for Encapsulated Graphene},
author = {Godfrey Gumbs and Norman J. M. Horing and Andrii Iurov and Dipendra Dahal},
journal= {arXiv preprint arXiv:1601.01373},
year = {2016}
}
Comments
14 pages, 4 figures