Localization of electrons and formation of two-dimensional Wigner spin lattices in a special cylindrical semiconductor stripe

Welander, Erik; Yakimenko, Iryna I.; Berggren, Karl-Fredrik

Localization of electrons and formation of two-dimensional Wigner spin lattices in a special cylindrical semiconductor stripe

Dateien

Zu diesem Dokument gibt es keine Dateien.

Datum

2010

Autor:innen

Welander, Erik

Yakimenko, Iryna I.

Berggren, Karl-Fredrik

DOI (zitierfähiger Link)

https://doi.org/10.1103/PhysRevB.82.073307

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review B. American Physical Society (APS). 2010, 82(7), 073307. ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.82.073307

Zusammenfassung

We consider a two-dimensional (2D)electron gas residing on the surface of a cylinder of a given radius R in the presence of a parabolic confinement along the axis of the cylinder. In this way the system of electrons forms a closed cylindrical stripe (wire). Using the local spin-density technique we first consider localization of electrons within of a potential barrier embedded in the wire. Barriers with sharp retangularlike features are populated in steps because of Coulomb blockade. The nature of a single bound state in a short soft barrier (quantum point contacts) at pinch-off is discussed in terms Coulomb blockade. For a shallow barrier-free wire we retrace the structural transitions at low electron densities from a single chain of localized states to double and triple chains (Wigner spin lattices). The present system is related to the model of a inhomogeneous quantum wire introduced recently by Güçlü et al. [Phys. Rev. B 80, 201302(R) (2009)]. An important aspect is, however, the present extension into higher electron densities as well as to the low-density regime and the formation of 2D Wigner microlattices.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

WELANDER, Erik, Iryna I. YAKIMENKO, Karl-Fredrik BERGGREN, 2010. Localization of electrons and formation of two-dimensional Wigner spin lattices in a special cylindrical semiconductor stripe. In: Physical Review B. American Physical Society (APS). 2010, 82(7), 073307. ISSN 1098-0121. eISSN 1550-235X. Available under: doi: 10.1103/PhysRevB.82.073307

BibTex

@article{Welander2010-08-27Local-51593,
  year={2010},
  doi={10.1103/PhysRevB.82.073307},
  title={Localization of electrons and formation of two-dimensional Wigner spin lattices in a special cylindrical semiconductor stripe},
  number={7},
  volume={82},
  issn={1098-0121},
  journal={Physical Review B},
  author={Welander, Erik and Yakimenko, Iryna I. and Berggren, Karl-Fredrik},
  note={Article Number: 073307}
}

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/123456789/51593">
    <dc:creator>Yakimenko, Iryna I.</dc:creator>
    <dc:creator>Berggren, Karl-Fredrik</dc:creator>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Welander, Erik</dc:creator>
    <dc:contributor>Yakimenko, Iryna I.</dc:contributor>
    <dcterms:title>Localization of electrons and formation of two-dimensional Wigner spin lattices in a special cylindrical semiconductor stripe</dcterms:title>
    <dcterms:issued>2010-08-27</dcterms:issued>
    <dcterms:abstract xml:lang="eng">We consider a two-dimensional (2D)electron gas residing on the surface of a cylinder of a given radius R in the presence of a parabolic confinement along the axis of the cylinder. In this way the system of electrons forms a closed cylindrical stripe (wire). Using the local spin-density technique we first consider localization of electrons within of a potential barrier embedded in the wire. Barriers with sharp retangularlike features are populated in steps because of Coulomb blockade. The nature of a single bound state in a short soft barrier (quantum point contacts) at pinch-off is discussed in terms Coulomb blockade. For a shallow barrier-free wire we retrace the structural transitions at low electron densities from a single chain of localized states to double and triple chains (Wigner spin lattices). The present system is related to the model of a inhomogeneous quantum wire introduced recently by Güçlü et al. [Phys. Rev. B 80, 201302(R) (2009)]. An important aspect is, however, the present extension into higher electron densities as well as to the low-density regime and the formation of 2D Wigner microlattices.</dcterms:abstract>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-11-02T13:24:07Z</dcterms:available>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/51593"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:language>eng</dc:language>
    <dc:contributor>Welander, Erik</dc:contributor>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-11-02T13:24:07Z</dc:date>
    <dc:contributor>Berggren, Karl-Fredrik</dc:contributor>
  </rdf:Description>
</rdf:RDF>

Universitätsbibliographie

Ja

Begutachtet

Ja