Quasi-ballistic-electron transport in random superlattices

We theoretically study electron transport in disordered, quantum-well-based, semiconductor superlattices with structural short-range correlations. Our system consists of equal-width square barriers and quantum wells with two different thicknesses. The two kinds of quantum wells are randomly distribu...

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Detalles Bibliográficos
Autores: Domínguez-Adame Acosta, Francisco, Sánchez, Angel, Díez Gutiérrez, Enrique Javier
Tipo de recurso: artículo
Fecha de publicación:1994
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/59395
Acceso en línea:https://hdl.handle.net/20.500.14352/59395
Access Level:acceso abierto
Palabra clave:538.9
Localization
Física de materiales
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spelling Quasi-ballistic-electron transport in random superlatticesDomínguez-Adame Acosta, FranciscoSánchez, AngelDíez Gutiérrez, Enrique Javier538.9LocalizationFísica de materialesWe theoretically study electron transport in disordered, quantum-well-based, semiconductor superlattices with structural short-range correlations. Our system consists of equal-width square barriers and quantum wells with two different thicknesses. The two kinds of quantum wells are randomly distributed along the growth direction. Structural correlations are introduced by adding the constraint that one of the wells always appears in pairs. We show that such correlated disordered superlattices exhibit a strong enhancement of their dc conductance as compared to usual random ones, giving rise to quasi-ballistic-electron transport. Interestingly, this phenomenon is also detected in superlattices with random fluctuations of the well thicknesses. Our predictions can be used to demonstrate experimentally that structural correlations inhibit the localization effects of disorder and, most important, that it should be clearly observed even in the presence of imperfections.American Physical SocietyUniversidad Complutense de Madrid19941994-12-1519941994-12-15journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/59395reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/593952026-06-02T12:44:21Z
dc.title.none.fl_str_mv Quasi-ballistic-electron transport in random superlattices
title Quasi-ballistic-electron transport in random superlattices
spellingShingle Quasi-ballistic-electron transport in random superlattices
Domínguez-Adame Acosta, Francisco
538.9
Localization
Física de materiales
title_short Quasi-ballistic-electron transport in random superlattices
title_full Quasi-ballistic-electron transport in random superlattices
title_fullStr Quasi-ballistic-electron transport in random superlattices
title_full_unstemmed Quasi-ballistic-electron transport in random superlattices
title_sort Quasi-ballistic-electron transport in random superlattices
dc.creator.none.fl_str_mv Domínguez-Adame Acosta, Francisco
Sánchez, Angel
Díez Gutiérrez, Enrique Javier
author Domínguez-Adame Acosta, Francisco
author_facet Domínguez-Adame Acosta, Francisco
Sánchez, Angel
Díez Gutiérrez, Enrique Javier
author_role author
author2 Sánchez, Angel
Díez Gutiérrez, Enrique Javier
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Localization
Física de materiales
topic 538.9
Localization
Física de materiales
description We theoretically study electron transport in disordered, quantum-well-based, semiconductor superlattices with structural short-range correlations. Our system consists of equal-width square barriers and quantum wells with two different thicknesses. The two kinds of quantum wells are randomly distributed along the growth direction. Structural correlations are introduced by adding the constraint that one of the wells always appears in pairs. We show that such correlated disordered superlattices exhibit a strong enhancement of their dc conductance as compared to usual random ones, giving rise to quasi-ballistic-electron transport. Interestingly, this phenomenon is also detected in superlattices with random fluctuations of the well thicknesses. Our predictions can be used to demonstrate experimentally that structural correlations inhibit the localization effects of disorder and, most important, that it should be clearly observed even in the presence of imperfections.
publishDate 1994
dc.date.none.fl_str_mv 1994
1994-12-15
1994
1994-12-15
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/59395
url https://hdl.handle.net/20.500.14352/59395
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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