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|Title:||Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: an analytical approach|
|Author(s):||Gonçalves, Paulo André Dias|
Dias, E. J. C.
Bludov, Yuliy V.
Peres, N. M. R.
|Publisher:||American Physical Society|
|Journal:||Physical Review B|
|Citation:||Gonçalves, P. A. D., Dias, E. J. C., Bludov, Yu. V. and Peres, N. M. R. (2016). Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: An analytical approach. Phys. Rev. B 94, 195421. doi: 10.1103/PhysRevB.94.195421|
|Abstract(s):||We study electromagnetic scattering and subsequent plasmonic excitations in periodic grids of graphene ribbons. To address this problem, we develop an analytical method to describe the plasmon-assisted absorption of electromagnetic radiation by a periodic structure of graphene ribbons forming a diﬀraction grating for THz and mid-IR light. The major advantage of this method lies in its ability to accurately describe the excitation of graphene surface plasmons (GSPs) in one-dimensional (1D) graphene gratings without the use of both time-consuming, and computationally-demanding full-wave numerical simulations. We thus provide analytical expressions for the reﬂectance, transmittance and plasmon-enhanced absorbance spectra, which can be readily evaluated in any personal laptop with little-to-none programming. We also introduce a semi-analytical method to benchmark our previous results and further compare the theoretical data with spectra taken from experiments, to which we observe a very good agreement. These theoretical tools may therefore be applied to design new experiments and cutting-edge nanophotonic devices based on graphene plasmonics.|
|Appears in Collections:||CDF - CEP - Artigos/Papers (with refereeing)|