Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation

Detalhes bibliográficos
Autor(a) principal: Have, J.
Data de Publicação: 2019
Outros Autores: Catarina, G., Pedersen, T. G., 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/1822/60490
Resumo: Using an equation of motion (EOM) approach, we calculate excitonic properties of monolayer transition metal dichalcogenides (TMDs) perturbed by an external magnetic field. We compare our findings to the widely used Wannier model for excitons in two-dimensional materials and to recent experimental results. We find good agreement between the calculated excitonic transition energies and the experimental results. In addition, we find that the exciton energies calculated using the EOM approach are slightly lower than the ones calculated using the Wannier model. Finally, we also show that the effect of the dielectric environment on the magnetoexciton transition energy is minimal due to counteracting changes in the exciton energy and the exchange self-energy correction.
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spelling Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculationCiências Naturais::Ciências FísicasScience & TechnologyUsing an equation of motion (EOM) approach, we calculate excitonic properties of monolayer transition metal dichalcogenides (TMDs) perturbed by an external magnetic field. We compare our findings to the widely used Wannier model for excitons in two-dimensional materials and to recent experimental results. We find good agreement between the calculated excitonic transition energies and the experimental results. In addition, we find that the exciton energies calculated using the EOM approach are slightly lower than the ones calculated using the Wannier model. Finally, we also show that the effect of the dielectric environment on the magnetoexciton transition energy is minimal due to counteracting changes in the exciton energy and the exchange self-energy correction.J.H. and T.G.P. gratefully acknowledge financial support by the QUSCOPE Center, sponsored by the Villum Foundation. Additionally, T.G.P. is supported by the Center for Nanostructured Graphene (CNG), which is sponsored by the Danish National Research Foundation, Project No. DNRF103. G.C. acknowledges financial support from FCT for the P2020-PTDC/FIS-NAN/4662/2014 project. N.M.R.P. acknowledges 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 UID/FIS/04650/2013. Additionally, N.M.R.P. acknowledges COMPETE2020, PORTUGAL2020, FEDER, and the Portuguese Foundation for Science and Technology (FCT) through Project No. PTDC/FIS-NAN/3668/201.info:eu-repo/semantics/publishedVersionAmerican Physical Society (APS)Universidade do MinhoHave, J.Catarina, G.Pedersen, T. G.Peres, N. M. R.20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/60490eng2469-995010.1103/PhysRevB.99.035416info: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:RCAAP2023-07-21T12:29:05Zoai:repositorium.sdum.uminho.pt:1822/60490Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:24:00.504274Repositório 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 Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation
title Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation
spellingShingle Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation
Have, J.
Ciências Naturais::Ciências Físicas
Science & Technology
title_short Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation
title_full Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation
title_fullStr Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation
title_full_unstemmed Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation
title_sort Monolayer transition metal dichalcogenides in strong magnetic fields: validating the Wannier model using a microscopic calculation
author Have, J.
author_facet Have, J.
Catarina, G.
Pedersen, T. G.
Peres, N. M. R.
author_role author
author2 Catarina, G.
Pedersen, T. G.
Peres, N. M. R.
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Have, J.
Catarina, G.
Pedersen, T. G.
Peres, N. M. R.
dc.subject.por.fl_str_mv Ciências Naturais::Ciências Físicas
Science & Technology
topic Ciências Naturais::Ciências Físicas
Science & Technology
description Using an equation of motion (EOM) approach, we calculate excitonic properties of monolayer transition metal dichalcogenides (TMDs) perturbed by an external magnetic field. We compare our findings to the widely used Wannier model for excitons in two-dimensional materials and to recent experimental results. We find good agreement between the calculated excitonic transition energies and the experimental results. In addition, we find that the exciton energies calculated using the EOM approach are slightly lower than the ones calculated using the Wannier model. Finally, we also show that the effect of the dielectric environment on the magnetoexciton transition energy is minimal due to counteracting changes in the exciton energy and the exchange self-energy correction.
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/1822/60490
url http://hdl.handle.net/1822/60490
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2469-9950
10.1103/PhysRevB.99.035416
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
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