Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides

Detalhes bibliográficos
Autor(a) principal: Carvalho, A.
Data de Publicação: 2013
Outros Autores: Ribeiro, R. M., Castro Neto, A. H.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/27423
Resumo: We have studied the optical conductivity of two-dimensional (2D) semiconducting transition metal dichalcogenides using ab initio density functional theory. We find that this class of materials presents large optical response due to the phenomenon of band nesting. The tendency towards band nesting is enhanced by the presence of van Hove singularities in the band structure of these materials. Given that 2D crystals are atomically thin and naturally transparent, our results show that it is possible to have strong photon-electron interactions even in 2D.
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spelling Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenidesDichalcogenidesBand nestingScience & TechnologyWe have studied the optical conductivity of two-dimensional (2D) semiconducting transition metal dichalcogenides using ab initio density functional theory. We find that this class of materials presents large optical response due to the phenomenon of band nesting. The tendency towards band nesting is enhanced by the presence of van Hove singularities in the band structure of these materials. Given that 2D crystals are atomically thin and naturally transparent, our results show that it is possible to have strong photon-electron interactions even in 2D.Financial support by FEDER through the COMPETE Program and by the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Project No. PEST-C/FIS/UI607/2011 and Grant No. SFRH/BSAB/1249/2012. We acknowledge the NRF-CRP award “Novel 2D materials with tailored properties: beyond graphene” (Award No. R-144-000-295-281).American Physical SocietyUniversidade do MinhoCarvalho, A.Ribeiro, R. M.Castro Neto, A. H.20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/27423eng1098-01211550-235X10.1103/PhysRevB.88.115205http://prb.aps.org/abstract/PRB/v88/i11/e115205info: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:RCAAP2023-07-21T12:01:36Zoai:repositorium.sdum.uminho.pt:1822/27423Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:51:31.571349Repositório 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 Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
title Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
spellingShingle Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
Carvalho, A.
Dichalcogenides
Band nesting
Science & Technology
title_short Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
title_full Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
title_fullStr Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
title_full_unstemmed Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
title_sort Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
author Carvalho, A.
author_facet Carvalho, A.
Ribeiro, R. M.
Castro Neto, A. H.
author_role author
author2 Ribeiro, R. M.
Castro Neto, A. H.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Carvalho, A.
Ribeiro, R. M.
Castro Neto, A. H.
dc.subject.por.fl_str_mv Dichalcogenides
Band nesting
Science & Technology
topic Dichalcogenides
Band nesting
Science & Technology
description We have studied the optical conductivity of two-dimensional (2D) semiconducting transition metal dichalcogenides using ab initio density functional theory. We find that this class of materials presents large optical response due to the phenomenon of band nesting. The tendency towards band nesting is enhanced by the presence of van Hove singularities in the band structure of these materials. Given that 2D crystals are atomically thin and naturally transparent, our results show that it is possible to have strong photon-electron interactions even in 2D.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01T00:00:00Z
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/1822/27423
url http://hdl.handle.net/1822/27423
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1098-0121
1550-235X
10.1103/PhysRevB.88.115205
http://prb.aps.org/abstract/PRB/v88/i11/e115205
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 American Physical Society
publisher.none.fl_str_mv American Physical Society
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
instacron_str RCAAP
institution RCAAP
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
repository.mail.fl_str_mv
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