Miniband effect on optical vibrations in short-period InGaAs/InP superlattices

Autores
Pusep, Yu A.; de Giovanni Rodrigues, A.; Galzerani, J. C.; Cornet, D. M.; Comedi, David Mario; LaPierre, R. R.
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The formation of the miniband electron energy structure and its effect on optical vibrational modes were explored in doped InxGa1?xAs/InP superlattices with different periods. The analysis of the high resolution x-ray diffraction, Raman and magnetotransport data allowed us to conclude that in spite of the defect structure of the layers constituting the superlattices, their superperiodicity was well defined. The blueshift of the coupled plasmon-LO phonon modes was observed with decreasing superlattice period consistent with the development of the minibands. The coherence lengths of the coupled modes were found to be considerably longer than those of the optical phonons. This provided a quantitative proof of the conditions for breakdown of the Raman selection rules. Due to the defect structure of the layers no Raman selection rules were observed for the longitudinal optical phonons in long-period superlattices. In contrast, the selection rules of the coupled plasmon-longitudinal optical phonon vibrations observed in short-period superlattices were demonstrated to occur due to the increase of the coherence lengths of the coupled modes with respect to the coherence lengths of the optical phonons.
Fil: Pusep, Yu A.. Universidade de São Paulo; Brasil
Fil: de Giovanni Rodrigues, A.. Universidade Federal de São Carlos; Brasil
Fil: Galzerani, J. C.. Universidade Federal de São Carlos; Brasil
Fil: Cornet, D. M.. McMaster University; Canadá
Fil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: LaPierre, R. R.. McMaster University; Canadá
Materia
Miniband
Superlattice
III-V semiconductors
Raman spectroscopy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/85313
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/85313
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Miniband effect on optical vibrations in short-period InGaAs/InP superlatticesPusep, Yu A.de Giovanni Rodrigues, A.Galzerani, J. C.Cornet, D. M.Comedi, David MarioLaPierre, R. R.MinibandSuperlatticeIII-V semiconductorsRaman spectroscopyhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The formation of the miniband electron energy structure and its effect on optical vibrational modes were explored in doped InxGa1?xAs/InP superlattices with different periods. The analysis of the high resolution x-ray diffraction, Raman and magnetotransport data allowed us to conclude that in spite of the defect structure of the layers constituting the superlattices, their superperiodicity was well defined. The blueshift of the coupled plasmon-LO phonon modes was observed with decreasing superlattice period consistent with the development of the minibands. The coherence lengths of the coupled modes were found to be considerably longer than those of the optical phonons. This provided a quantitative proof of the conditions for breakdown of the Raman selection rules. Due to the defect structure of the layers no Raman selection rules were observed for the longitudinal optical phonons in long-period superlattices. In contrast, the selection rules of the coupled plasmon-longitudinal optical phonon vibrations observed in short-period superlattices were demonstrated to occur due to the increase of the coherence lengths of the coupled modes with respect to the coherence lengths of the optical phonons.Fil: Pusep, Yu A.. Universidade de São Paulo; BrasilFil: de Giovanni Rodrigues, A.. Universidade Federal de São Carlos; BrasilFil: Galzerani, J. C.. Universidade Federal de São Carlos; BrasilFil: Cornet, D. M.. McMaster University; CanadáFil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: LaPierre, R. R.. McMaster University; CanadáAPS2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/85313Pusep, Yu A.; de Giovanni Rodrigues, A.; Galzerani, J. C.; Cornet, D. M.; Comedi, David Mario; et al.; Miniband effect on optical vibrations in short-period InGaAs/InP superlattices; APS; Physical Review B; 73; 12-2006; 1-60163-1829CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.73.235344info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/pdf/10.1103/PhysRevB.73.235344info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:08:54Zoai:ri.conicet.gov.ar:11336/85313instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:08:54.933CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Miniband effect on optical vibrations in short-period InGaAs/InP superlattices
title Miniband effect on optical vibrations in short-period InGaAs/InP superlattices
spellingShingle Miniband effect on optical vibrations in short-period InGaAs/InP superlattices
Pusep, Yu A.
Miniband
Superlattice
III-V semiconductors
Raman spectroscopy
title_short Miniband effect on optical vibrations in short-period InGaAs/InP superlattices
title_full Miniband effect on optical vibrations in short-period InGaAs/InP superlattices
title_fullStr Miniband effect on optical vibrations in short-period InGaAs/InP superlattices
title_full_unstemmed Miniband effect on optical vibrations in short-period InGaAs/InP superlattices
title_sort Miniband effect on optical vibrations in short-period InGaAs/InP superlattices
dc.creator.none.fl_str_mv Pusep, Yu A.
de Giovanni Rodrigues, A.
Galzerani, J. C.
Cornet, D. M.
Comedi, David Mario
LaPierre, R. R.
author Pusep, Yu A.
author_facet Pusep, Yu A.
de Giovanni Rodrigues, A.
Galzerani, J. C.
Cornet, D. M.
Comedi, David Mario
LaPierre, R. R.
author_role author
author2 de Giovanni Rodrigues, A.
Galzerani, J. C.
Cornet, D. M.
Comedi, David Mario
LaPierre, R. R.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Miniband
Superlattice
III-V semiconductors
Raman spectroscopy
topic Miniband
Superlattice
III-V semiconductors
Raman spectroscopy
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The formation of the miniband electron energy structure and its effect on optical vibrational modes were explored in doped InxGa1?xAs/InP superlattices with different periods. The analysis of the high resolution x-ray diffraction, Raman and magnetotransport data allowed us to conclude that in spite of the defect structure of the layers constituting the superlattices, their superperiodicity was well defined. The blueshift of the coupled plasmon-LO phonon modes was observed with decreasing superlattice period consistent with the development of the minibands. The coherence lengths of the coupled modes were found to be considerably longer than those of the optical phonons. This provided a quantitative proof of the conditions for breakdown of the Raman selection rules. Due to the defect structure of the layers no Raman selection rules were observed for the longitudinal optical phonons in long-period superlattices. In contrast, the selection rules of the coupled plasmon-longitudinal optical phonon vibrations observed in short-period superlattices were demonstrated to occur due to the increase of the coherence lengths of the coupled modes with respect to the coherence lengths of the optical phonons.
Fil: Pusep, Yu A.. Universidade de São Paulo; Brasil
Fil: de Giovanni Rodrigues, A.. Universidade Federal de São Carlos; Brasil
Fil: Galzerani, J. C.. Universidade Federal de São Carlos; Brasil
Fil: Cornet, D. M.. McMaster University; Canadá
Fil: Comedi, David Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: LaPierre, R. R.. McMaster University; Canadá
description The formation of the miniband electron energy structure and its effect on optical vibrational modes were explored in doped InxGa1?xAs/InP superlattices with different periods. The analysis of the high resolution x-ray diffraction, Raman and magnetotransport data allowed us to conclude that in spite of the defect structure of the layers constituting the superlattices, their superperiodicity was well defined. The blueshift of the coupled plasmon-LO phonon modes was observed with decreasing superlattice period consistent with the development of the minibands. The coherence lengths of the coupled modes were found to be considerably longer than those of the optical phonons. This provided a quantitative proof of the conditions for breakdown of the Raman selection rules. Due to the defect structure of the layers no Raman selection rules were observed for the longitudinal optical phonons in long-period superlattices. In contrast, the selection rules of the coupled plasmon-longitudinal optical phonon vibrations observed in short-period superlattices were demonstrated to occur due to the increase of the coherence lengths of the coupled modes with respect to the coherence lengths of the optical phonons.
publishDate 2006
dc.date.none.fl_str_mv 2006-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/85313
Pusep, Yu A.; de Giovanni Rodrigues, A.; Galzerani, J. C.; Cornet, D. M.; Comedi, David Mario; et al.; Miniband effect on optical vibrations in short-period InGaAs/InP superlattices; APS; Physical Review B; 73; 12-2006; 1-6
0163-1829
CONICET Digital
CONICET
url http://hdl.handle.net/11336/85313
identifier_str_mv Pusep, Yu A.; de Giovanni Rodrigues, A.; Galzerani, J. C.; Cornet, D. M.; Comedi, David Mario; et al.; Miniband effect on optical vibrations in short-period InGaAs/InP superlattices; APS; Physical Review B; 73; 12-2006; 1-6
0163-1829
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.73.235344
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/pdf/10.1103/PhysRevB.73.235344
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv APS
publisher.none.fl_str_mv APS
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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