Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact

Detalhes bibliográficos
Autor(a) principal: Baidus, N. V.
Data de Publicação: 2012
Outros Autores: Vasilevskiy, Mikhail, Khazanova, S. V., Zvonkov, B. N., Meulen, H. P. van der, Calleja, J. M., Vinã, L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/20898
Resumo: EPL draft
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spelling Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contactOptical properties of low-dimensional, mesoscopic, and nanoscale materialsSpin transport through interfacesScience & TechnologyEPL draftWe demonstrate the feasibility to obtain electroluminescence (EL), up to room temperature, from InGaAs self-assembled quantum dots (QDs) included in a forward-biased Schottky diode. Moreover, using a ferromagnet (FM) as the contact layer, sizable circular polarization of the EL emission in the presence of an external magnetic eld is obtained. A resonant behav- ior of the degree of circular polarization (P) as a function of applied voltage (V ), for a given value of magnetic eld, is observed. We explain our ndings using a model including tunneling of (spin-polarised) holes through the metal-semiconductor interface, transport in the near surface region of the heterostructure and out-of-equilibrium statistics of the injected carriers occupying the available states in the QD heterostructure. In particular, the resonant P(V ) dependence is related to the splitting of the qusi-Fermi level for two spin orientations in the FM.FCT, Portugal (project POCI/FIS/58524/2004), the RFBR, Russia (grant 10-02- 00501), MEC (grants MAT2008-01555, QOIT-CSD2006- 00019) and CAM (S-2009/ESP-1503) (Spain).IOP PublishingUniversidade do MinhoBaidus, N. V.Vasilevskiy, MikhailKhazanova, S. V.Zvonkov, B. N.Meulen, H. P. van derCalleja, J. M.Vinã, L.20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/20898eng0295-507510.1209/0295-5075/98/27012info: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:RCAAP2023-07-21T12:47:26Zoai:repositorium.sdum.uminho.pt:1822/20898Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:45:32.258029Repositório 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 Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact
title Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact
spellingShingle Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact
Baidus, N. V.
Optical properties of low-dimensional, mesoscopic, and nanoscale materials
Spin transport through interfaces
Science & Technology
title_short Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact
title_full Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact
title_fullStr Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact
title_full_unstemmed Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact
title_sort Light emission and spin-polarised hole injection in InAs/GaAs quantum dot heterostructures with Schottky contact
author Baidus, N. V.
author_facet Baidus, N. V.
Vasilevskiy, Mikhail
Khazanova, S. V.
Zvonkov, B. N.
Meulen, H. P. van der
Calleja, J. M.
Vinã, L.
author_role author
author2 Vasilevskiy, Mikhail
Khazanova, S. V.
Zvonkov, B. N.
Meulen, H. P. van der
Calleja, J. M.
Vinã, L.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Baidus, N. V.
Vasilevskiy, Mikhail
Khazanova, S. V.
Zvonkov, B. N.
Meulen, H. P. van der
Calleja, J. M.
Vinã, L.
dc.subject.por.fl_str_mv Optical properties of low-dimensional, mesoscopic, and nanoscale materials
Spin transport through interfaces
Science & Technology
topic Optical properties of low-dimensional, mesoscopic, and nanoscale materials
Spin transport through interfaces
Science & Technology
description EPL draft
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01T00:00:00Z
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/1822/20898
url http://hdl.handle.net/1822/20898
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0295-5075
10.1209/0295-5075/98/27012
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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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