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TitleGraphene plasmons in triangular wedges and grooves
Author(s)Gonçalves, Paulo André Dias
Dias, E. J. C.
Xiao, Sanshui
Vasilevskiy, Mikhail
Mortensen, N. Asger
Peres, N. M. R.
KeywordsChannel plasmons
Graphene plasmons
Issue date21-Oct-2016
PublisherAmerican Chemical Society
JournalACS Photonics
CitationGonçalves, P. A. D., Dias, E. J. C., Xiao, Sanshui, Vasilevskiy, M. I., Mortensen, N. Asger and Peres, N. M. R. (2016). Graphene Plasmons in Triangular Wedges and Grooves. ACS Photonics 2016 3 (11), 2176-2183. doi: 10.1021/acsphotonics.6b00674
Abstract(s)The ability to effectively guide electromagnetic radiation below the diffraction limit is of the utmost importance in the prospect of all-optical plasmonic circuitry. Here, we propose an alternative solution to conventional metal-based plasmonics by exploiting the deep subwavelength confinement and tunability of graphene plasmons guided along the apex of a graphene-covered dielectric wedge or groove. In particular, we present a quasi-analytic model to describe the plasmonic eigenmodes in such a system, including the complete determination of their spectrum and corresponding induced potential and electric-field distributions. We have found that the dispersion of wedge/groove graphene plasmons follows the same functional dependence as their flat-graphene plasmon counterparts, but now scaled by a (purely) geometric factor in which all the information about the system’s geometry is contained. We believe our results pave the way for the development of novel custom-tailored photonic devices for subwavelength waveguiding and localization of light based on recently discovered 2D materials.
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Appears in Collections:CDF - CEP - Artigos/Papers (with refereeing)

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