Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field

Detalhes bibliográficos
Autor(a) principal: Rajashabala,S.
Data de Publicação: 2007
Outros Autores: Navaneethakrishnan,K.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332007000700011
Resumo: Donor binding energies in quantum well systems using position dependent effective masses are obtained. Results are provided for GaAs-Ga1- Al xAs and the semimagnetic CdTe-Cd1-x Mn xTe systems. In the latter the barrier height reduces in a magnetic field. Using the available experimental data the variations of the barrier height with magnetic field has been obtained using a simple model. Our results are in good agreement with similar works in the literature in the case of constant effective mass for the donor electron. However, in the case of the semi magnetic system and in the case of the position dependent effective mass, the results obtained are shown to be appreciably different for narrow well dimensions. The validity of the effective mass approximation in the case of applied magnetic field is also critically examined.
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spelling Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic fieldQuantum wellsDonor binding energies in quantum well systems using position dependent effective masses are obtained. Results are provided for GaAs-Ga1- Al xAs and the semimagnetic CdTe-Cd1-x Mn xTe systems. In the latter the barrier height reduces in a magnetic field. Using the available experimental data the variations of the barrier height with magnetic field has been obtained using a simple model. Our results are in good agreement with similar works in the literature in the case of constant effective mass for the donor electron. However, in the case of the semi magnetic system and in the case of the position dependent effective mass, the results obtained are shown to be appreciably different for narrow well dimensions. The validity of the effective mass approximation in the case of applied magnetic field is also critically examined.Sociedade Brasileira de Física2007-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332007000700011Brazilian Journal of Physics v.37 n.3b 2007reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332007000700011info:eu-repo/semantics/openAccessRajashabala,S.Navaneethakrishnan,K.eng2007-10-19T00:00:00Zoai:scielo:S0103-97332007000700011Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2007-10-19T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
title Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
spellingShingle Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
Rajashabala,S.
Quantum wells
title_short Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
title_full Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
title_fullStr Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
title_full_unstemmed Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
title_sort Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
author Rajashabala,S.
author_facet Rajashabala,S.
Navaneethakrishnan,K.
author_role author
author2 Navaneethakrishnan,K.
author2_role author
dc.contributor.author.fl_str_mv Rajashabala,S.
Navaneethakrishnan,K.
dc.subject.por.fl_str_mv Quantum wells
topic Quantum wells
description Donor binding energies in quantum well systems using position dependent effective masses are obtained. Results are provided for GaAs-Ga1- Al xAs and the semimagnetic CdTe-Cd1-x Mn xTe systems. In the latter the barrier height reduces in a magnetic field. Using the available experimental data the variations of the barrier height with magnetic field has been obtained using a simple model. Our results are in good agreement with similar works in the literature in the case of constant effective mass for the donor electron. However, in the case of the semi magnetic system and in the case of the position dependent effective mass, the results obtained are shown to be appreciably different for narrow well dimensions. The validity of the effective mass approximation in the case of applied magnetic field is also critically examined.
publishDate 2007
dc.date.none.fl_str_mv 2007-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332007000700011
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332007000700011
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-97332007000700011
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Brazilian Journal of Physics v.37 n.3b 2007
reponame:Brazilian Journal of Physics
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Brazilian Journal of Physics
collection Brazilian Journal of Physics
repository.name.fl_str_mv Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br
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