Publikation: Spin-on Spintronics : Ultrafast Electron Spin Dynamics in ZnO and Zn1-xCoxO Sol-Gel Films
Dateien
Datum
Autor:innen
Herausgeber:innen
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
URI (zitierfähiger Link)
DOI (zitierfähiger Link)
Internationale Patentnummer
Link zur Lizenz
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Titel in einer weiteren Sprache
Publikationstyp
Publikationsstatus
Erschienen in
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)
Schlagwörter
Konferenz
Rezension
Zitieren
ISO 690
WHITAKER, 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/nl201736pBibTex
@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<sub>1-x</sub>Co<sub>x</sub>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<sup>2+</sup> to ZnO increases the effective electron Landé g factor, providing the first direct determination of the mean-field electron-Co<sup>2+</sup> exchange energy in Zn<sub>1-x</sub>Co<sub>x</sub>O (N<sub>0</sub>alpha = +0.25 (0.02 eV). In Zn<sub>1-x</sub>Co<sub>x</sub>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>