Signatures of spin blockade in the optical response of a charged quantum dot

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2012
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Physical Review B. 2012, 86(4). ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.86.045122
Zusammenfassung

We model spin blockade for optically excited electrons in a charged semiconductor quantum dot. We study the case in which the quantum dot is initially charged with a single electron and is then filled with an additional, optically excited electron-hole pair, thus forming a charged exciton (trion). To make contact with recent experiments, we model an optical pump-probe setup in which the two lowest quantum dot levels (s and p shells) are photoexcited. Using the Lindblad master equation, we calculate the differential transmission spectrum as a function of the pump-probe time delay. Taking into account both spin-conserving and spin-flip intraband relaxation processes, we find that the presence of the ground state electron spin leads to an optical spin blockade at short delay times which is visible as a crossover between two exponential decays of the differential transmission. To make predictions for future experiments, we also study the dependence of the spin blockade on an external magnetic field.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690KAVOUSANAKI, Eleftheria E., Guido BURKARD, 2012. Signatures of spin blockade in the optical response of a charged quantum dot. In: Physical Review B. 2012, 86(4). ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.86.045122
BibTex
@article{Kavousanaki2012Signa-22720,
  year={2012},
  doi={10.1103/PhysRevB.86.045122},
  title={Signatures of spin blockade in the optical response of a charged quantum dot},
  number={4},
  volume={86},
  issn={1098-0121},
  journal={Physical Review B},
  author={Kavousanaki, Eleftheria E. and Burkard, Guido}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/22720">
    <dc:contributor>Kavousanaki, Eleftheria E.</dc:contributor>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-05-08T13:45:53Z</dc:date>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:rights>terms-of-use</dc:rights>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/22720"/>
    <dc:language>eng</dc:language>
    <dcterms:title>Signatures of spin blockade in the optical response of a charged quantum dot</dcterms:title>
    <dcterms:abstract xml:lang="eng">We model spin blockade for optically excited electrons in a charged semiconductor quantum dot. We study the case in which the quantum dot is initially charged with a single electron and is then filled with an additional, optically excited electron-hole pair, thus forming a charged exciton (trion). To make contact with recent experiments, we model an optical pump-probe setup in which the two lowest quantum dot levels (s and p shells) are photoexcited. Using the Lindblad master equation, we calculate the differential transmission spectrum as a function of the pump-probe time delay. Taking into account both spin-conserving and spin-flip intraband relaxation processes, we find that the presence of the ground state electron spin leads to an optical spin blockade at short delay times which is visible as a crossover between two exponential decays of the differential transmission. To make predictions for future experiments, we also study the dependence of the spin blockade on an external magnetic field.</dcterms:abstract>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:creator>Kavousanaki, Eleftheria E.</dc:creator>
    <dc:creator>Burkard, Guido</dc:creator>
    <dcterms:issued>2012</dcterms:issued>
    <dcterms:bibliographicCitation>Physical Review B ; 86 (2012), 4. - 045122</dcterms:bibliographicCitation>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-05-08T13:45:53Z</dcterms:available>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:contributor>Burkard, Guido</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Diese Publikation teilen