Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires

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In this work we study the modal characteristics of localized surface plasmons in graphene-coated, circular cross-section wires. Localized surface plasmons are represented in terms of cylindrical multipole partial waves characterized by discrete, complex frequencies that depend on the size of the wir...

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Autores principales:	Cuevas, M., Riso, M.A., Depine, R.A.
Formato:	JOUR
Materias:	Graphene plasmons Multiple scattering Plasmonics Wires Coatings Graphene Particle size Surface plasmon resonance Wire Analytical expressions Circular cross-sections Localized surface plasmon Modal characteristics Scattering cross section Sub-wavelength wires Plasmons coating particle size
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00224073_v173_n_p26_Cuevas
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00224073_v173_n_p26_Cuevas
record_format	dspace
spelling	todo:paper_00224073_v173_n_p26_Cuevas2023-10-03T14:32:49Z Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires Cuevas, M. Riso, M.A. Depine, R.A. Graphene plasmons Multiple scattering Plasmonics Wires Coatings Graphene Multiple scattering Particle size Surface plasmon resonance Wire Analytical expressions Circular cross-sections Graphene plasmons Localized surface plasmon Modal characteristics Plasmonics Scattering cross section Sub-wavelength wires Plasmons coating particle size In this work we study the modal characteristics of localized surface plasmons in graphene-coated, circular cross-section wires. Localized surface plasmons are represented in terms of cylindrical multipole partial waves characterized by discrete, complex frequencies that depend on the size of the wire and can be dynamically tuned via a gate voltage. We consider both intrinsically nonplasmonic wires and intrinsically plasmonic wires. In the first case the localized surface plasmons are introduced by the graphene coating, whereas in the second case the localized eigenmodes of the graphene coating are expected to hybridize those already existing in the bare wire. We show that the approach presented here, valid for particle sizes where the retardation effects can be significant, is in good agreement with analytical expressions obtained in the limit when particle size is very small compared to the wavelength of the eigenmode and with results indirectly determined from scattering cross-section spectra. © 2016 Elsevier Ltd. Fil:Cuevas, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Depine, R.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00224073_v173_n_p26_Cuevas
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Graphene plasmons Multiple scattering Plasmonics Wires Coatings Graphene Multiple scattering Particle size Surface plasmon resonance Wire Analytical expressions Circular cross-sections Graphene plasmons Localized surface plasmon Modal characteristics Plasmonics Scattering cross section Sub-wavelength wires Plasmons coating particle size
spellingShingle	Graphene plasmons Multiple scattering Plasmonics Wires Coatings Graphene Multiple scattering Particle size Surface plasmon resonance Wire Analytical expressions Circular cross-sections Graphene plasmons Localized surface plasmon Modal characteristics Plasmonics Scattering cross section Sub-wavelength wires Plasmons coating particle size Cuevas, M. Riso, M.A. Depine, R.A. Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires
topic_facet	Graphene plasmons Multiple scattering Plasmonics Wires Coatings Graphene Multiple scattering Particle size Surface plasmon resonance Wire Analytical expressions Circular cross-sections Graphene plasmons Localized surface plasmon Modal characteristics Plasmonics Scattering cross section Sub-wavelength wires Plasmons coating particle size
description	In this work we study the modal characteristics of localized surface plasmons in graphene-coated, circular cross-section wires. Localized surface plasmons are represented in terms of cylindrical multipole partial waves characterized by discrete, complex frequencies that depend on the size of the wire and can be dynamically tuned via a gate voltage. We consider both intrinsically nonplasmonic wires and intrinsically plasmonic wires. In the first case the localized surface plasmons are introduced by the graphene coating, whereas in the second case the localized eigenmodes of the graphene coating are expected to hybridize those already existing in the bare wire. We show that the approach presented here, valid for particle sizes where the retardation effects can be significant, is in good agreement with analytical expressions obtained in the limit when particle size is very small compared to the wavelength of the eigenmode and with results indirectly determined from scattering cross-section spectra. © 2016 Elsevier Ltd.
format	JOUR
author	Cuevas, M. Riso, M.A. Depine, R.A.
author_facet	Cuevas, M. Riso, M.A. Depine, R.A.
author_sort	Cuevas, M.
title	Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires
title_short	Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires
title_full	Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires
title_fullStr	Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires
title_full_unstemmed	Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires
title_sort	complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires
url	http://hdl.handle.net/20.500.12110/paper_00224073_v173_n_p26_Cuevas
work_keys_str_mv	AT cuevasm complexfrequenciesandfielddistributionsoflocalizedsurfaceplasmonmodesingraphenecoatedsubwavelengthwires AT risoma complexfrequenciesandfielddistributionsoflocalizedsurfaceplasmonmodesingraphenecoatedsubwavelengthwires AT depinera complexfrequenciesandfielddistributionsoflocalizedsurfaceplasmonmodesingraphenecoatedsubwavelengthwires
_version_	1807316830421778432

Complex frequencies and field distributions of localized surface plasmon modes in graphene-coated subwavelength wires

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