Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure

ABSTRACT: The mixing between the Γ and X conduction-band valleys in GaAs-Ga1−xAlxAs quantum wells is investigated by using a phenomenological model which takes into account the effects of applied hydrostatic pressure. The dependencies of the variationally calculated photoluminescence peak-energy tra...

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Autores:
López Ríos, Sonia Yaneth
Mora Ramos, Miguel Eduardo
Duque Echeverri, Carlos Alberto
Tipo de recurso:
Article of investigation
Fecha de publicación:
2008
Institución:
Universidad de Antioquia
Repositorio:
Repositorio UdeA
Idioma:
eng
OAI Identifier:
oai:bibliotecadigital.udea.edu.co:10495/31001
Acceso en línea:
https://hdl.handle.net/10495/31001
https://www.springer.com/journal/10051
Palabra clave:
Pozos cuánticos
Quantum wells
III-V semiconductors
Rights
openAccess
License
http://creativecommons.org/licenses/by/2.5/co/
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oai_identifier_str oai:bibliotecadigital.udea.edu.co:10495/31001
network_acronym_str UDEA2
network_name_str Repositorio UdeA
repository_id_str
dc.title.spa.fl_str_mv Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure
title Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure
spellingShingle Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure
Pozos cuánticos
Quantum wells
III-V semiconductors
title_short Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure
title_full Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure
title_fullStr Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure
title_full_unstemmed Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure
title_sort Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressure
dc.creator.fl_str_mv López Ríos, Sonia Yaneth
Mora Ramos, Miguel Eduardo
Duque Echeverri, Carlos Alberto
dc.contributor.author.none.fl_str_mv López Ríos, Sonia Yaneth
Mora Ramos, Miguel Eduardo
Duque Echeverri, Carlos Alberto
dc.subject.lemb.none.fl_str_mv Pozos cuánticos
Quantum wells
topic Pozos cuánticos
Quantum wells
III-V semiconductors
dc.subject.proposal.spa.fl_str_mv III-V semiconductors
description ABSTRACT: The mixing between the Γ and X conduction-band valleys in GaAs-Ga1−xAlxAs quantum wells is investigated by using a phenomenological model which takes into account the effects of applied hydrostatic pressure. The dependencies of the variationally calculated photoluminescence peak-energy transitions on the applied hydrostatic pressure and quantum-well width are presented. A systematic study of the Γ − X mixing parameter is also reported. In particular, it is shown that the inclusion of the Γ − X mixing explains the non-linear behavior in the photoluminescence peak of confined exciton states that has been experimentally observed for pressures above 15 kbar in GaAs-Ga1−xAlxAs quantum wells.
publishDate 2008
dc.date.issued.none.fl_str_mv 2008
dc.date.accessioned.none.fl_str_mv 2022-09-30T20:13:40Z
dc.date.available.none.fl_str_mv 2022-09-30T20:13:40Z
dc.type.spa.fl_str_mv info:eu-repo/semantics/article
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dc.type.redcol.spa.fl_str_mv https://purl.org/redcol/resource_type/ART
dc.type.local.spa.fl_str_mv Artículo de investigación
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dc.identifier.issn.none.fl_str_mv 1434-6028
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10495/31001
dc.identifier.doi.none.fl_str_mv 10.1140/epjb/e2008-00161-6
dc.identifier.eissn.none.fl_str_mv 1434-6036
dc.identifier.url.spa.fl_str_mv https://www.springer.com/journal/10051
identifier_str_mv 1434-6028
10.1140/epjb/e2008-00161-6
1434-6036
url https://hdl.handle.net/10495/31001
https://www.springer.com/journal/10051
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.ispartofjournalabbrev.spa.fl_str_mv Eur. Phys. J. B.
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eu_rights_str_mv openAccess
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dc.publisher.spa.fl_str_mv Springer
dc.publisher.group.spa.fl_str_mv Grupo de Materia Condensada-UdeA
dc.publisher.place.spa.fl_str_mv Les Ulis, Francia
institution Universidad de Antioquia
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spelling López Ríos, Sonia YanethMora Ramos, Miguel EduardoDuque Echeverri, Carlos Alberto2022-09-30T20:13:40Z2022-09-30T20:13:40Z20081434-6028https://hdl.handle.net/10495/3100110.1140/epjb/e2008-00161-61434-6036https://www.springer.com/journal/10051ABSTRACT: The mixing between the Γ and X conduction-band valleys in GaAs-Ga1−xAlxAs quantum wells is investigated by using a phenomenological model which takes into account the effects of applied hydrostatic pressure. The dependencies of the variationally calculated photoluminescence peak-energy transitions on the applied hydrostatic pressure and quantum-well width are presented. A systematic study of the Γ − X mixing parameter is also reported. In particular, it is shown that the inclusion of the Γ − X mixing explains the non-linear behavior in the photoluminescence peak of confined exciton states that has been experimentally observed for pressures above 15 kbar in GaAs-Ga1−xAlxAs quantum wells.COL00333195application/pdfengSpringerGrupo de Materia Condensada-UdeALes Ulis, Franciainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_2df8fbb1https://purl.org/redcol/resource_type/ARTArtículo de investigaciónhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/co/http://purl.org/coar/access_right/c_abf2https://creativecommons.org/licenses/by/4.0/Gamma-X mixing in GaAs-Ga(1-x)Al(x)As quantum wells under hydrostatic pressurePozos cuánticosQuantum wellsIII-V semiconductorsEur. Phys. J. B.European Physical Journal B25726162ORIGINALDuqueCarlos_2008_MixingInGaAs-Ga1-xAlxAs.pdfDuqueCarlos_2008_MixingInGaAs-Ga1-xAlxAs.pdfArtículo de investigaciónapplication/pdf296973https://bibliotecadigital.udea.edu.co/bitstream/10495/31001/1/DuqueCarlos_2008_MixingInGaAs-Ga1-xAlxAs.pdf5b705c3b21f1f642ca988f97feb7a8ebMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8927https://bibliotecadigital.udea.edu.co/bitstream/10495/31001/2/license_rdf1646d1f6b96dbbbc38035efc9239ac9cMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://bibliotecadigital.udea.edu.co/bitstream/10495/31001/3/license.txt8a4605be74aa9ea9d79846c1fba20a33MD5310495/31001oai:bibliotecadigital.udea.edu.co:10495/310012022-09-30 15:13:40.474Repositorio Institucional Universidad de Antioquiaandres.perez@udea.edu.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