Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials

Detalhes bibliográficos
Autor(a) principal: Gonçalves, Paulo André Dias
Data de Publicação: 2017
Outros Autores: Xiao, Sanshui, Peres, N. M. R., Mortensen, N. Asger
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/47628
Resumo: Plasmon coupling and hybridization in complex nanostructures constitutes a fertile playground for controlling light at the nanoscale. Here, we present a semi-analytical model to describe the emergence of hybrid plasmon modes guided along 2D nano-slits. In particular, we find two new coupled plasmonic resonances arising from symmetric and antisymmetric hybridizations of the edge plasmons of the constituent half-sheets. These give rise to an antibonding and a bonding mode, lying above and below the energy of the bare edge plasmon. Our treatment is notably generic, being able to account for slits of arbitrary width, and remains valid irrespective of the 2D conductive material (e.g., doped graphene, 2D transition metal dichalcogenides, or phosphorene). We derive the dispersion relation of the hybrid modes of a 2D nano-slit along with the corresponding induced potential and electric field distributions. We also discuss the plasmonic spectrum of a 2D slit together with the one from its complementarity structure, that is, a ribbon. Finally, the case of a nano-slit made from an anisotropic 2D material is considered. Focusing on black phosphorus (which is highly anisotropic), we investigate the features of its plasmonic spectrum along the two main crystal axes. Our results offer insights into the interaction of plasmons in complex 2D nanostructures, thereby expanding the current toolkit of plasmonic resonances in 2D materials, and paving the way for the emergence of future compact devices based on atomically thin plasmonics.
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spelling Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D MaterialsGraphenePlasmonicsTwo-dimensional materialsGraphene plasmonsHybridizationBlack phosphorusNanostructuresPolaritonsCiências Naturais::Ciências FísicasScience & TechnologyPlasmon coupling and hybridization in complex nanostructures constitutes a fertile playground for controlling light at the nanoscale. Here, we present a semi-analytical model to describe the emergence of hybrid plasmon modes guided along 2D nano-slits. In particular, we find two new coupled plasmonic resonances arising from symmetric and antisymmetric hybridizations of the edge plasmons of the constituent half-sheets. These give rise to an antibonding and a bonding mode, lying above and below the energy of the bare edge plasmon. Our treatment is notably generic, being able to account for slits of arbitrary width, and remains valid irrespective of the 2D conductive material (e.g., doped graphene, 2D transition metal dichalcogenides, or phosphorene). We derive the dispersion relation of the hybrid modes of a 2D nano-slit along with the corresponding induced potential and electric field distributions. We also discuss the plasmonic spectrum of a 2D slit together with the one from its complementarity structure, that is, a ribbon. Finally, the case of a nano-slit made from an anisotropic 2D material is considered. Focusing on black phosphorus (which is highly anisotropic), we investigate the features of its plasmonic spectrum along the two main crystal axes. Our results offer insights into the interaction of plasmons in complex 2D nanostructures, thereby expanding the current toolkit of plasmonic resonances in 2D materials, and paving the way for the emergence of future compact devices based on atomically thin plasmonics.Danish National Research Foundation (Project DNRF103), through the Center for Nanostructured Graphene. N.A.M. is a VILLUM Inves- tigator supported by the VILLUM FONDEN (grant No. 16498). N.M.R.P. acknowledges financial support from the European Commission (696656), and the Fundação Portuguesa para a Ciência e a Tecnologia (UID/FIS/04650/2013)info:eu-repo/semantics/acceptedVersionACS PublicationsUniversidade do MinhoGonçalves, Paulo André DiasXiao, SanshuiPeres, N. M. R.Mortensen, N. Asger2017-09-052017-09-05T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/47628engGonçalves, P. A. D., Xiao, S., Peres, N. M. R., & Mortensen, N. A. (2017). Hybridized Plasmons in 2D Nanoslits: From Graphene to Anisotropic 2D Materials. ACS Photonics.2330-40222330-402210.1021/acsphotonics.7b00558http://pubs.acs.org/doi/abs/10.1021/acsphotonics.7b00558info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:25:49Zoai:repositorium.sdum.uminho.pt:1822/47628Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:20:08.399473Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials
title Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials
spellingShingle Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials
Gonçalves, Paulo André Dias
Graphene
Plasmonics
Two-dimensional materials
Graphene plasmons
Hybridization
Black phosphorus
Nanostructures
Polaritons
Ciências Naturais::Ciências Físicas
Science & Technology
title_short Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials
title_full Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials
title_fullStr Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials
title_full_unstemmed Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials
title_sort Hybridized Plasmons in 2D Nano-slits: From Graphene to Anisotropic 2D Materials
author Gonçalves, Paulo André Dias
author_facet Gonçalves, Paulo André Dias
Xiao, Sanshui
Peres, N. M. R.
Mortensen, N. Asger
author_role author
author2 Xiao, Sanshui
Peres, N. M. R.
Mortensen, N. Asger
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Gonçalves, Paulo André Dias
Xiao, Sanshui
Peres, N. M. R.
Mortensen, N. Asger
dc.subject.por.fl_str_mv Graphene
Plasmonics
Two-dimensional materials
Graphene plasmons
Hybridization
Black phosphorus
Nanostructures
Polaritons
Ciências Naturais::Ciências Físicas
Science & Technology
topic Graphene
Plasmonics
Two-dimensional materials
Graphene plasmons
Hybridization
Black phosphorus
Nanostructures
Polaritons
Ciências Naturais::Ciências Físicas
Science & Technology
description Plasmon coupling and hybridization in complex nanostructures constitutes a fertile playground for controlling light at the nanoscale. Here, we present a semi-analytical model to describe the emergence of hybrid plasmon modes guided along 2D nano-slits. In particular, we find two new coupled plasmonic resonances arising from symmetric and antisymmetric hybridizations of the edge plasmons of the constituent half-sheets. These give rise to an antibonding and a bonding mode, lying above and below the energy of the bare edge plasmon. Our treatment is notably generic, being able to account for slits of arbitrary width, and remains valid irrespective of the 2D conductive material (e.g., doped graphene, 2D transition metal dichalcogenides, or phosphorene). We derive the dispersion relation of the hybrid modes of a 2D nano-slit along with the corresponding induced potential and electric field distributions. We also discuss the plasmonic spectrum of a 2D slit together with the one from its complementarity structure, that is, a ribbon. Finally, the case of a nano-slit made from an anisotropic 2D material is considered. Focusing on black phosphorus (which is highly anisotropic), we investigate the features of its plasmonic spectrum along the two main crystal axes. Our results offer insights into the interaction of plasmons in complex 2D nanostructures, thereby expanding the current toolkit of plasmonic resonances in 2D materials, and paving the way for the emergence of future compact devices based on atomically thin plasmonics.
publishDate 2017
dc.date.none.fl_str_mv 2017-09-05
2017-09-05T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/47628
url http://hdl.handle.net/1822/47628
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Gonçalves, P. A. D., Xiao, S., Peres, N. M. R., & Mortensen, N. A. (2017). Hybridized Plasmons in 2D Nanoslits: From Graphene to Anisotropic 2D Materials. ACS Photonics.
2330-4022
2330-4022
10.1021/acsphotonics.7b00558
http://pubs.acs.org/doi/abs/10.1021/acsphotonics.7b00558
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ACS Publications
publisher.none.fl_str_mv ACS Publications
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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