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1 August 2021 Quantum size- and nonlocal-effects in the plasmonic response of graphene nano-ribbons
Álvaro Rodríguez Echarri, Javier García de Abajo, Joel Cox
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Proceedings Volume 11802, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVIII; 118020G (2021) https://doi.org/10.1117/12.2594916
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
Plasmons propagating in 1-D graphene nanoribbons are studied by employing precise quantum-mechanical calculations that account for the quantum finite-size, edge-termination, and nonlocal effects in the optical response. Our calculations indicate a strong dependence on such phenomena for excitation with a high optical momentum component along the direction of transverse symmetry in both linear and nonlinear optical response. Particularly, second-order processes are found to yield a high efficiency owing to the breaking of inversion symmetry. We seek to profit from such phenomena and motivate the application of graphene nanostructures towards actively-tunable plasmonic conduits in nanophotonic circuitry.
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Álvaro Rodríguez Echarri, Javier García de Abajo, and Joel Cox "Quantum size- and nonlocal-effects in the plasmonic response of graphene nano-ribbons", Proc. SPIE 11802, Nanoengineering: Fabrication, Properties, Optics, Thin Films, and Devices XVIII, 118020G (1 August 2021); https://doi.org/10.1117/12.2594916
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KEYWORDS
Graphene
Plasmonics
Plasmons
Band structure simulations
Carbon
Metals
Nanophotonics
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