Band nesting and the optical response of two-dimensional semiconducting transition metal dichalcogenides
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
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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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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1799132287700303872 |