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|Title:||Graphene plasmons in triangular wedges and grooves|
|Author(s):||Gonçalves, Paulo André Dias|
Dias, E. J. C.
Mortensen, N. Asger
Peres, N. M. R.
|Publisher:||American Chemical Society|
|Citation:||Gonçalves, 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.|
|Appears in Collections:||CDF - CEP - Artigos/Papers (with refereeing)|