Entropy and kinetics of point defects in two-dimensional dipolar crystals

Lade...
Vorschaubild
Dateien
Lechner_0-285584.pdf
Lechner_0-285584.pdfGröße: 2.11 MBDownloads: 541
Datum
2015
Autor:innen
Lechner, Wolfgang
Dellago, Christoph
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
Open Access Green
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
Physical Review E. 2015, 91(3), 032304. ISSN 1063-651X. eISSN 1550-2376. Available under: doi: 10.1103/PhysRevE.91.032304
Zusammenfassung

We study in experiment and with computer simulation the free energy and the kinetics of vacancy and interstitial defects in two-dimensional dipolar crystals. The defects appear in different local topologies, which we characterize by their point group symmetry; Cn is the n-fold cyclic group and Dn is the dihedral group, including reflections. The frequency of different local topologies is not determined by their almost degenerate energies but is dominated by entropy for symmetric configurations. The kinetics of the defects is fully reproduced by a master equation in a multistate Markov model. In this model, the system is described by the state of the defect and the time evolution is given by transitions occurring with particular rates. These transition rate constants are extracted from experiments and simulations using an optimization procedure. The good agreement between experiment, simulation, and master equation thus provides evidence for the accuracy of the model.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Colloids; Defects and impurities in crystals; microstructure
Konferenz
Rezension
undefined / . - undefined, undefined
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Datensätze
Zitieren
ISO 690LECHNER, Wolfgang, David POLSTER, Georg MARET, Christoph DELLAGO, Peter KEIM, 2015. Entropy and kinetics of point defects in two-dimensional dipolar crystals. In: Physical Review E. 2015, 91(3), 032304. ISSN 1063-651X. eISSN 1550-2376. Available under: doi: 10.1103/PhysRevE.91.032304
BibTex
@article{Lechner2015Entro-30828,
  year={2015},
  doi={10.1103/PhysRevE.91.032304},
  title={Entropy and kinetics of point defects in two-dimensional dipolar crystals},
  number={3},
  volume={91},
  issn={1063-651X},
  journal={Physical Review E},
  author={Lechner, Wolfgang and Polster, David and Maret, Georg and Dellago, Christoph and Keim, Peter},
  note={Article Number: 032304}
}
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/123456789/30828">
    <dc:creator>Maret, Georg</dc:creator>
    <dc:creator>Polster, David</dc:creator>
    <dc:rights>terms-of-use</dc:rights>
    <dc:language>eng</dc:language>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/30828/3/Lechner_0-285584.pdf"/>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/30828"/>
    <dc:contributor>Lechner, Wolfgang</dc:contributor>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:contributor>Keim, Peter</dc:contributor>
    <dc:contributor>Polster, David</dc:contributor>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dcterms:title>Entropy and kinetics of point defects in two-dimensional dipolar crystals</dcterms:title>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Keim, Peter</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2015-04-29T08:29:20Z</dc:date>
    <dcterms:abstract xml:lang="eng">We study in experiment and with computer simulation the free energy and the kinetics of vacancy and interstitial defects in two-dimensional dipolar crystals. The defects appear in different local topologies, which we characterize by their point group symmetry; Cn is the n-fold cyclic group and Dn is the dihedral group, including reflections. The frequency of different local topologies is not determined by their almost degenerate energies but is dominated by entropy for symmetric configurations. The kinetics of the defects is fully reproduced by a master equation in a multistate Markov model. In this model, the system is described by the state of the defect and the time evolution is given by transitions occurring with particular rates. These transition rate constants are extracted from experiments and simulations using an optimization procedure. The good agreement between experiment, simulation, and master equation thus provides evidence for the accuracy of the model.</dcterms:abstract>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2015-04-29T08:29:20Z</dcterms:available>
    <dcterms:issued>2015</dcterms:issued>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/30828/3/Lechner_0-285584.pdf"/>
    <dc:creator>Dellago, Christoph</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:contributor>Maret, Georg</dc:contributor>
    <dc:contributor>Dellago, Christoph</dc:contributor>
    <dc:creator>Lechner, Wolfgang</dc:creator>
  </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