Effective masses for donor binding energies in non-magnetic and magnetic quantum well systems: effect of magnetic field
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | |
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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Brazilian Journal of Physics |
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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 |
_version_ |
1754734864376004608 |