On the anomalous Stark effect in a thin disc-shaped quantum dot.
Identifieur interne : 001845 ( Main/Exploration ); précédent : 001844; suivant : 001846On the anomalous Stark effect in a thin disc-shaped quantum dot.
Auteurs : RBID : pubmed:21403190English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Arsenicals, Indium.
- chemistry : Nanostructures.
- ultrastructure : Nanostructures.
- Electromagnetic Fields, Models, Chemical, Particle Size, Quantum Dots, Quantum Theory.
Abstract
The effect of a lateral external electric field F on an exciton ground state in an InAs disc-shaped quantum dot has been studied using a variational method within the effective mass approximation. We consider that the radial dimension of the disc is very large compared to its height. This situation leads to separating the excitonic Hamiltonian into two independent parts: the lateral confinement which corresponds to a two-dimensional harmonic oscillator and an infinite square well in the growth direction. Our calculations show that the complete description of the lateral Stark shift requires both the linear and quadratic terms in F which explains that the exciton possess nonzero lateral dipolar moment and polarizability. The fit of the calculated Stark shift permits us to estimate the lateral permanent dipole moment and the polarizability according to the disc size. Our results are compared to those existing in the literature. In addition the behavior of the optical integral shows that the exciton lifetime is greater than that under zero field which is due to the field-induced polarization.
DOI: 10.1088/0953-8984/22/37/375301
PubMed: 21403190
Links toward previous steps (curation, corpus...)
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">On the anomalous Stark effect in a thin disc-shaped quantum dot.</title><author><name sortKey="Oukerroum, A" uniqKey="Oukerroum A">A Oukerroum</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire de Physique de la Matière Condensée, Faculté des Sciences et Techniques, Bd Yassima, 28820 Mohammedia, Morocco.</nlm:affiliation><country xml:lang="fr">Maroc</country><wicri:regionArea>Laboratoire de Physique de la Matière Condensée, Faculté des Sciences et Techniques, Bd Yassima, 28820 Mohammedia</wicri:regionArea></affiliation></author><author><name sortKey="Feddi, E" uniqKey="Feddi E">E Feddi</name></author><author><name sortKey="Bailach, J Bosch" uniqKey="Bailach J">J Bosch Bailach</name></author><author><name sortKey="Mart Nez Pastor, J" uniqKey="Mart Nez Pastor J">J Martínez-Pastor</name></author><author><name sortKey="Dujardin, F" uniqKey="Dujardin F">F Dujardin</name></author><author><name sortKey="Assaid, E" uniqKey="Assaid E">E Assaid</name></author></titleStmt><publicationStmt><date when="2010">2010</date><idno type="doi">10.1088/0953-8984/22/37/375301</idno><idno type="RBID">pubmed:21403190</idno><idno type="pmid">21403190</idno><idno type="wicri:Area/Main/Corpus">001515</idno><idno type="wicri:Area/Main/Curation">001515</idno><idno type="wicri:Area/Main/Exploration">001845</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Arsenicals (chemistry)</term><term>Electromagnetic Fields</term><term>Indium (chemistry)</term><term>Models, Chemical</term><term>Nanostructures (chemistry)</term><term>Nanostructures (ultrastructure)</term><term>Particle Size</term><term>Quantum Dots</term><term>Quantum Theory</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Arsenicals</term><term>Indium</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Nanostructures</term></keywords><keywords scheme="MESH" qualifier="ultrastructure" xml:lang="en"><term>Nanostructures</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electromagnetic Fields</term><term>Models, Chemical</term><term>Particle Size</term><term>Quantum Dots</term><term>Quantum Theory</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The effect of a lateral external electric field F on an exciton ground state in an InAs disc-shaped quantum dot has been studied using a variational method within the effective mass approximation. We consider that the radial dimension of the disc is very large compared to its height. This situation leads to separating the excitonic Hamiltonian into two independent parts: the lateral confinement which corresponds to a two-dimensional harmonic oscillator and an infinite square well in the growth direction. Our calculations show that the complete description of the lateral Stark shift requires both the linear and quadratic terms in F which explains that the exciton possess nonzero lateral dipolar moment and polarizability. The fit of the calculated Stark shift permits us to estimate the lateral permanent dipole moment and the polarizability according to the disc size. Our results are compared to those existing in the literature. In addition the behavior of the optical integral shows that the exciton lifetime is greater than that under zero field which is due to the field-induced polarization.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">21403190</PMID><DateCreated><Year>2011</Year><Month>03</Month><Day>15</Day></DateCreated><DateCompleted><Year>2011</Year><Month>08</Month><Day>09</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1361-648X</ISSN><JournalIssue CitedMedium="Internet"><Volume>22</Volume><Issue>37</Issue><PubDate><Year>2010</Year><Month>Sep</Month><Day>22</Day></PubDate></JournalIssue><Title>Journal of physics. Condensed matter : an Institute of Physics journal</Title><ISOAbbreviation>J Phys Condens Matter</ISOAbbreviation></Journal><ArticleTitle>On the anomalous Stark effect in a thin disc-shaped quantum dot.</ArticleTitle><Pagination><MedlinePgn>375301</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1088/0953-8984/22/37/375301</ELocationID><Abstract><AbstractText>The effect of a lateral external electric field F on an exciton ground state in an InAs disc-shaped quantum dot has been studied using a variational method within the effective mass approximation. We consider that the radial dimension of the disc is very large compared to its height. This situation leads to separating the excitonic Hamiltonian into two independent parts: the lateral confinement which corresponds to a two-dimensional harmonic oscillator and an infinite square well in the growth direction. Our calculations show that the complete description of the lateral Stark shift requires both the linear and quadratic terms in F which explains that the exciton possess nonzero lateral dipolar moment and polarizability. The fit of the calculated Stark shift permits us to estimate the lateral permanent dipole moment and the polarizability according to the disc size. Our results are compared to those existing in the literature. In addition the behavior of the optical integral shows that the exciton lifetime is greater than that under zero field which is due to the field-induced polarization.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Oukerroum</LastName><ForeName>A</ForeName><Initials>A</Initials><Affiliation>Laboratoire de Physique de la Matière Condensée, Faculté des Sciences et Techniques, Bd Yassima, 28820 Mohammedia, Morocco.</Affiliation></Author><Author ValidYN="Y"><LastName>Feddi</LastName><ForeName>E</ForeName><Initials>E</Initials></Author><Author ValidYN="Y"><LastName>Bailach</LastName><ForeName>J Bosch</ForeName><Initials>JB</Initials></Author><Author ValidYN="Y"><LastName>Martínez-Pastor</LastName><ForeName>J</ForeName><Initials>J</Initials></Author><Author ValidYN="Y"><LastName>Dujardin</LastName><ForeName>F</ForeName><Initials>F</Initials></Author><Author ValidYN="Y"><LastName>Assaid</LastName><ForeName>E</ForeName><Initials>E</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2010</Year><Month>08</Month><Day>25</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Phys Condens Matter</MedlineTA><NlmUniqueID>101165248</NlmUniqueID><ISSNLinking>0953-8984</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Arsenicals</NameOfSubstance></Chemical><Chemical><RegistryNumber>045A6V3VFX</RegistryNumber><NameOfSubstance>Indium</NameOfSubstance></Chemical><Chemical><RegistryNumber>1303-11-3</RegistryNumber><NameOfSubstance>indium arsenide</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Arsenicals</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electromagnetic Fields</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Indium</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y">Models, Chemical</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Nanostructures</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName><QualifierName MajorTopicYN="Y">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Particle Size</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y">Quantum Dots</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Quantum Theory</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="aheadofprint"><Year>2010</Year><Month>8</Month><Day>25</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2011</Year><Month>3</Month><Day>16</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2011</Year><Month>3</Month><Day>16</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2011</Year><Month>8</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">S0953-8984(10)56981-9</ArticleId><ArticleId IdType="doi">10.1088/0953-8984/22/37/375301</ArticleId><ArticleId IdType="pubmed">21403190</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=IndiumV2/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001845 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 001845 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= *** parameter Area/wikiCode missing ***
|area= IndiumV2
|flux= Main
|étape= Exploration
|type= RBID
|clé= pubmed:21403190
|texte= On the anomalous Stark effect in a thin disc-shaped quantum dot.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:21403190" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \
| NlmPubMed2Wicri -a IndiumV2
| This area was generated with Dilib version V0.5.76. |  |