Optical orientation with linearly polarized light in transition metal dichalcogenides

Detalhes bibliográficos
Autor(a) principal: Catarina, G.
Data de Publicação: 2019
Outros Autores: Have, J., Fernández-Rossier, J., Peres, N. M. R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/60493
Resumo: We study the optical properties of semiconducting transition metal dichalcogenide monolayers under the influence of strong out-of-plane magnetic fields, using the effective massive Dirac model. We pay attention to the role of spin-orbit-coupling effects, doping level, and electron-electron interactions, treated at the Hartree-Fock level. We find that optically induced valley and spin imbalance, commonly attained with circularly polarized light, can also be obtained with linearly polarized light in the doped regime. Additionally, we explore an exchange-driven mechanism to enhance the spin-orbit splitting of the conduction band, in n -doped systems, controlling both the carrier density and the intensity of the applied magnetic field.
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spelling Optical orientation with linearly polarized light in transition metal dichalcogenidesExcitonsTransition metal dichalcogenidesCiências Naturais::Ciências FísicasScience & TechnologyWe study the optical properties of semiconducting transition metal dichalcogenide monolayers under the influence of strong out-of-plane magnetic fields, using the effective massive Dirac model. We pay attention to the role of spin-orbit-coupling effects, doping level, and electron-electron interactions, treated at the Hartree-Fock level. We find that optically induced valley and spin imbalance, commonly attained with circularly polarized light, can also be obtained with linearly polarized light in the doped regime. Additionally, we explore an exchange-driven mechanism to enhance the spin-orbit splitting of the conduction band, in n -doped systems, controlling both the carrier density and the intensity of the applied magnetic field.We thank A. J. Chaves and L. Brey for fruitful discussions. G.C. thanks Departamento de Fisica Aplicada at Universidad de Alicante for their hospitality. G.C. and J.F.-R. acknowledge financial support from Fundacao para a Ciencia e a Tecnologia (FCT) for the Grant No. P2020-PTDC/FIS-NAN/4662/2014. J.H. acknowledges financial support by the QUSCOPE Center, sponsored by the Villum foundation. J.F.-R. acknowledges financial support from FCT for the Grants No. P2020-PTDC/FIS-NAN/3668/2014 and No. UTAP-EXPL/NTec/0046/2017, as well as Generalitat Valenciana funding Prometeo2017/139 and MINECO-Spain (Grant No. MAT2016-78625-C2). N.M.R.P. acknowledges financial support from the European Commission through the project "Graphene-Driven Revolutions in ICT and Beyond" (Ref. No. 785219) and the Portuguese Foundation for Science and Technology (FCT) in the framework of the Strategic Financing Grant No. UID/FIS/04650/2013. Additionally, N.M.R.P. acknowledges COMPETE2020, PORTUGAL2020, FEDER and the Portuguese Foundation for Science and Technology (FCT) for the Grants No. PTDC/FIS-NAN/3668/2013 and No. POCI-01-0145-FEDER-028114.info:eu-repo/semantics/publishedVersionAmerican Physical Society (APS)Universidade do MinhoCatarina, G.Have, J.Fernández-Rossier, J.Peres, N. M. R.20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/60493eng2469-995010.1103/PhysRevB.99.125405info: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:RCAAP2023-07-21T12:35:58Zoai:repositorium.sdum.uminho.pt:1822/60493Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:31:56.005105Repositório 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 Optical orientation with linearly polarized light in transition metal dichalcogenides
title Optical orientation with linearly polarized light in transition metal dichalcogenides
spellingShingle Optical orientation with linearly polarized light in transition metal dichalcogenides
Catarina, G.
Excitons
Transition metal dichalcogenides
Ciências Naturais::Ciências Físicas
Science & Technology
title_short Optical orientation with linearly polarized light in transition metal dichalcogenides
title_full Optical orientation with linearly polarized light in transition metal dichalcogenides
title_fullStr Optical orientation with linearly polarized light in transition metal dichalcogenides
title_full_unstemmed Optical orientation with linearly polarized light in transition metal dichalcogenides
title_sort Optical orientation with linearly polarized light in transition metal dichalcogenides
author Catarina, G.
author_facet Catarina, G.
Have, J.
Fernández-Rossier, J.
Peres, N. M. R.
author_role author
author2 Have, J.
Fernández-Rossier, J.
Peres, N. M. R.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Catarina, G.
Have, J.
Fernández-Rossier, J.
Peres, N. M. R.
dc.subject.por.fl_str_mv Excitons
Transition metal dichalcogenides
Ciências Naturais::Ciências Físicas
Science & Technology
topic Excitons
Transition metal dichalcogenides
Ciências Naturais::Ciências Físicas
Science & Technology
description We study the optical properties of semiconducting transition metal dichalcogenide monolayers under the influence of strong out-of-plane magnetic fields, using the effective massive Dirac model. We pay attention to the role of spin-orbit-coupling effects, doping level, and electron-electron interactions, treated at the Hartree-Fock level. We find that optically induced valley and spin imbalance, commonly attained with circularly polarized light, can also be obtained with linearly polarized light in the doped regime. Additionally, we explore an exchange-driven mechanism to enhance the spin-orbit splitting of the conduction band, in n -doped systems, controlling both the carrier density and the intensity of the applied magnetic field.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01T00:00:00Z
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/1822/60493
url http://hdl.handle.net/1822/60493
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2469-9950
10.1103/PhysRevB.99.125405
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 (APS)
publisher.none.fl_str_mv American Physical Society (APS)
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
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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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