Publikation:

Spin-on Spintronics : Ultrafast Electron Spin Dynamics in ZnO and Zn1-xCoxO Sol-Gel Films

Lade...
Vorschaubild

Dateien

Ruediger_etal.pdf
Ruediger_etal.pdfGröße: 2.88 MBDownloads: 1093

Datum

2011

Herausgeber:innen

Kontakt

ISSN der Zeitschrift

Electronic ISSN

ISBN

Bibliografische Daten

Verlag

Schriftenreihe

Auflagebezeichnung

DOI (zitierfähiger Link)
ArXiv-ID

Internationale Patentnummer

Angaben zur Forschungsförderung

Projekt

Open Access-Veröffentlichung
Open Access Green
Core Facility der Universität Konstanz

Gesperrt bis

Titel in einer weiteren Sprache

Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published

Erschienen in

Nano Letters. 2011, 11(8), pp. 3355-3360. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/nl201736p

Zusammenfassung

We use time-resolved Faraday rotation spectroscopy to probe the electron spin dynamics in ZnO and magnetically doped Zn1-xCoxO sol-gel thin films. In undoped ZnO, we observe an anomalous temperature dependence of the ensemble spin dephasing time T2*, i.e., longer coherence times at higher temperatures, reaching T2* ∼ 1.2 ns at room temperature. Time-resolved transmission measurements suggest that this effect arises from hole trapping at grain surfaces. Deliberate addition of Co2+ to ZnO increases the effective electron Landé g factor, providing the first direct determination of the mean-field electron-Co2+ exchange energy in Zn1-xCoxO (N0alpha = +0.25 (0.02 eV). In Zn1-xCoxO, T2* also increases with increasing temperature,allowing spin precession to be observed even at room temperature.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

ZnCoO, sol-gel, spin dynamics, hole trapping, exchange energy, time-resolved Faraday rotation

Konferenz

Rezension
undefined / . - undefined, undefined

Forschungsvorhaben

Organisationseinheiten

Zeitschriftenheft

Zugehörige Datensätze in KOPS

Zitieren

ISO 690WHITAKER, Kelly M., Maxim RASKIN, Gillian KILIANI, Katja BEHA, Stefan T. OCHSENBEIN, Nils JANSSEN, Mikhail FONIN, Ulrich RÜDIGER, Alfred LEITENSTORFER, Daniel GAMELIN, Rudolf BRATSCHITSCH, 2011. Spin-on Spintronics : Ultrafast Electron Spin Dynamics in ZnO and Zn1-xCoxO Sol-Gel Films. In: Nano Letters. 2011, 11(8), pp. 3355-3360. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/nl201736p
BibTex
@article{Whitaker2011-08-10Spino-16869,
  year={2011},
  doi={10.1021/nl201736p},
  title={Spin-on Spintronics : Ultrafast Electron Spin Dynamics in ZnO and Zn1-xCoxO Sol-Gel Films},
  number={8},
  volume={11},
  issn={1530-6984},
  journal={Nano Letters},
  pages={3355--3360},
  author={Whitaker, Kelly M. and Raskin, Maxim and Kiliani, Gillian and Beha, Katja and Ochsenbein, Stefan T. and Janssen, Nils and Fonin, Mikhail and Rüdiger, Ulrich and Leitenstorfer, Alfred and Gamelin, Daniel and Bratschitsch, Rudolf}
}
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/123456789/16869">
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-11-18T08:41:04Z</dc:date>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:creator>Beha, Katja</dc:creator>
    <dc:contributor>Ochsenbein, Stefan T.</dc:contributor>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/16869/1/Ruediger_etal.pdf"/>
    <dc:contributor>Leitenstorfer, Alfred</dc:contributor>
    <dc:creator>Leitenstorfer, Alfred</dc:creator>
    <dc:contributor>Fonin, Mikhail</dc:contributor>
    <dc:creator>Janssen, Nils</dc:creator>
    <dc:creator>Fonin, Mikhail</dc:creator>
    <dc:contributor>Kiliani, Gillian</dc:contributor>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/16869"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Raskin, Maxim</dc:creator>
    <dc:contributor>Raskin, Maxim</dc:contributor>
    <dcterms:bibliographicCitation>First publ. in: Nano Letters ; 11 (2011), 8. - S. 3355–3360</dcterms:bibliographicCitation>
    <dc:contributor>Rüdiger, Ulrich</dc:contributor>
    <dc:contributor>Janssen, Nils</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dcterms:abstract xml:lang="eng">We use time-resolved Faraday rotation spectroscopy to probe the electron spin dynamics in ZnO and magnetically doped Zn&lt;sub&gt;1-x&lt;/sub&gt;Co&lt;sub&gt;x&lt;/sub&gt;O sol-gel thin films. In undoped ZnO, we observe an anomalous temperature dependence of the ensemble spin dephasing time T2*, i.e., longer coherence times at higher temperatures, reaching T2* ∼ 1.2 ns at room temperature. Time-resolved transmission measurements suggest that this effect arises from hole trapping at grain surfaces. Deliberate addition of Co&lt;sup&gt;2+&lt;/sup&gt; to ZnO increases the effective electron Landé g factor, providing the first direct determination of the mean-field electron-Co&lt;sup&gt;2+&lt;/sup&gt; exchange energy in Zn&lt;sub&gt;1-x&lt;/sub&gt;Co&lt;sub&gt;x&lt;/sub&gt;O (N&lt;sub&gt;0&lt;/sub&gt;alpha = +0.25 (0.02 eV). In Zn&lt;sub&gt;1-x&lt;/sub&gt;Co&lt;sub&gt;x&lt;/sub&gt;O, T2* also increases with increasing temperature,allowing spin precession to be observed even at room temperature.</dcterms:abstract>
    <dc:creator>Whitaker, Kelly M.</dc:creator>
    <dc:contributor>Beha, Katja</dc:contributor>
    <dc:contributor>Bratschitsch, Rudolf</dc:contributor>
    <dcterms:issued>2011-08-10</dcterms:issued>
    <dc:creator>Rüdiger, Ulrich</dc:creator>
    <dc:creator>Ochsenbein, Stefan T.</dc:creator>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2012-07-11T22:25:05Z</dcterms:available>
    <dc:contributor>Gamelin, Daniel</dc:contributor>
    <dc:contributor>Whitaker, Kelly M.</dc:contributor>
    <dc:creator>Gamelin, Daniel</dc:creator>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:rights>terms-of-use</dc:rights>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:creator>Kiliani, Gillian</dc:creator>
    <dc:language>eng</dc:language>
    <dcterms:title>Spin-on Spintronics : Ultrafast Electron Spin Dynamics in ZnO and Zn1-xCoxO Sol-Gel Films</dcterms:title>
    <dc:creator>Bratschitsch, Rudolf</dc:creator>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/16869/1/Ruediger_etal.pdf"/>
  </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