DC electric field effects on the electron dynamics in double rectangular quantum dots
Autor(a) principal: | |
---|---|
Data de Publicação: | 2006 |
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=S0103-97332006000600019 |
Resumo: | The effect of a dc electric field on the temporal evolution of an electron in a double rectangular quantum dot is explored in this work. In the framework of the effective mass approximation, first-order scattering rates for interaction between confined electron-''free'' electron and electron-longitudinal acoustic phonon at room temperature are calculated in the high tunneling regime, and used to evaluate the dynamics of the population and coherence in the first three confined levels under a short ac electric field pulse. Small values of these rates dependent upon the bias field make feasible the emission of coherent radiation at terahertz range. |
id |
SBF-2_cdfc9ac092dbc9c7ef16c5ed5db05ad8 |
---|---|
oai_identifier_str |
oai:scielo:S0103-97332006000600019 |
network_acronym_str |
SBF-2 |
network_name_str |
Brazilian Journal of Physics |
repository_id_str |
|
spelling |
DC electric field effects on the electron dynamics in double rectangular quantum dotsCoupled quantum dotsDC biasCoherenceRelaxationThe effect of a dc electric field on the temporal evolution of an electron in a double rectangular quantum dot is explored in this work. In the framework of the effective mass approximation, first-order scattering rates for interaction between confined electron-''free'' electron and electron-longitudinal acoustic phonon at room temperature are calculated in the high tunneling regime, and used to evaluate the dynamics of the population and coherence in the first three confined levels under a short ac electric field pulse. Small values of these rates dependent upon the bias field make feasible the emission of coherent radiation at terahertz range.Sociedade Brasileira de Física2006-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600019Brazilian Journal of Physics v.36 n.3b 2006reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332006000600019info:eu-repo/semantics/openAccessRamirez,H. Y.Camacho,A. S.Lew Yan Voon,L. C.eng2006-11-29T00:00:00Zoai:scielo:S0103-97332006000600019Revistahttp://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:2006-11-29T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false |
dc.title.none.fl_str_mv |
DC electric field effects on the electron dynamics in double rectangular quantum dots |
title |
DC electric field effects on the electron dynamics in double rectangular quantum dots |
spellingShingle |
DC electric field effects on the electron dynamics in double rectangular quantum dots Ramirez,H. Y. Coupled quantum dots DC bias Coherence Relaxation |
title_short |
DC electric field effects on the electron dynamics in double rectangular quantum dots |
title_full |
DC electric field effects on the electron dynamics in double rectangular quantum dots |
title_fullStr |
DC electric field effects on the electron dynamics in double rectangular quantum dots |
title_full_unstemmed |
DC electric field effects on the electron dynamics in double rectangular quantum dots |
title_sort |
DC electric field effects on the electron dynamics in double rectangular quantum dots |
author |
Ramirez,H. Y. |
author_facet |
Ramirez,H. Y. Camacho,A. S. Lew Yan Voon,L. C. |
author_role |
author |
author2 |
Camacho,A. S. Lew Yan Voon,L. C. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Ramirez,H. Y. Camacho,A. S. Lew Yan Voon,L. C. |
dc.subject.por.fl_str_mv |
Coupled quantum dots DC bias Coherence Relaxation |
topic |
Coupled quantum dots DC bias Coherence Relaxation |
description |
The effect of a dc electric field on the temporal evolution of an electron in a double rectangular quantum dot is explored in this work. In the framework of the effective mass approximation, first-order scattering rates for interaction between confined electron-''free'' electron and electron-longitudinal acoustic phonon at room temperature are calculated in the high tunneling regime, and used to evaluate the dynamics of the population and coherence in the first three confined levels under a short ac electric field pulse. Small values of these rates dependent upon the bias field make feasible the emission of coherent radiation at terahertz range. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-09-01 |
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=S0103-97332006000600019 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000600019 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-97332006000600019 |
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.36 n.3b 2006 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_ |
1754734863324282880 |