Optical orientation with linearly polarized light in transition metal dichalcogenides
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
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/1822/60493 |
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. |
id |
RCAP_26fb005c85c592ee47fd2bbda3ea7f58 |
---|---|
oai_identifier_str |
oai:repositorium.sdum.uminho.pt:1822/60493 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
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:RCAAP2024-05-11T06:33:43Zoai:repositorium.sdum.uminho.pt:1822/60493Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-11T06:33:43Repositório 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 |
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 |
mluisa.alvim@gmail.com |
_version_ |
1817545014982475776 |