Complex nature of exchange splitting in oxide ferromagnets : A spin-resolved photoemission study of EuO

Kurzanzeige
dc.contributor.authorHeider, Tristan
dc.contributor.authorGerber, Tim
dc.contributor.authorKöksal, Okan
dc.contributor.authorEschbach, Markus
dc.contributor.authorMlynczak, Ewa
dc.contributor.authorLömker, Patrick
dc.contributor.authorGospodaric, Pika
dc.contributor.authorGehlmann, Mathias
dc.contributor.authorPlucinski, Lukasz
dc.contributor.authorMüller, Martina
dc.date.accessioned2021-05-04T13:11:38Z
dc.date.available2021-05-04T13:11:38Z
dc.date.issued2020eng
dc.description.abstractThe electronic structure of the ferromagnetic semiconductor EuO is investigated by means of spin- and angle-resolved photoemission spectroscopy and density functional theory. Our spin-resolved data reveals that, while the macroscopic magnetization of the sample vanishes at the Curie temperature TC, the experimentally-determined exchange splitting of the O 2p band persists at least up to TC if the picture of fluctuating spin-blocks is assumed. We discuss possible temperature-related spectral changes by analyzing ferromagnetic and antiferromagnetic phases, directional effect due to spin orbit coupling, as well as effects due to sample aging. Our calculations with a Hubbard U term reveal a complex nature of the local exchange splitting on the oxygen site and in conduction bands, shining a new light on the interpretation of previous optical and photoemission spectroscopic results.eng
dc.description.versionpublishedde
dc.identifier.arxiv1809.00631v2eng
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/53584
dc.language.isoengeng
dc.rightsterms-of-use
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/
dc.subject.ddc530eng
dc.titleComplex nature of exchange splitting in oxide ferromagnets : A spin-resolved photoemission study of EuOeng
dc.typePREPRINTde
dspace.entity.typePublication
kops.citation.bibtex
@unpublished{Heider2020Compl-53584,
  year={2020},
  title={Complex nature of exchange splitting in oxide ferromagnets : A spin-resolved photoemission study of EuO},
  author={Heider, Tristan and Gerber, Tim and Köksal, Okan and Eschbach, Markus and Mlynczak, Ewa and Lömker, Patrick and Gospodaric, Pika and Gehlmann, Mathias and Plucinski, Lukasz and Müller, Martina}
}
kops.citation.iso690HEIDER, Tristan, Tim GERBER, Okan KÖKSAL, Markus ESCHBACH, Ewa MLYNCZAK, Patrick LÖMKER, Pika GOSPODARIC, Mathias GEHLMANN, Lukasz PLUCINSKI, Martina MÜLLER, 2020. Complex nature of exchange splitting in oxide ferromagnets : A spin-resolved photoemission study of EuOdeu
kops.citation.iso690HEIDER, Tristan, Tim GERBER, Okan KÖKSAL, Markus ESCHBACH, Ewa MLYNCZAK, Patrick LÖMKER, Pika GOSPODARIC, Mathias GEHLMANN, Lukasz PLUCINSKI, Martina MÜLLER, 2020. Complex nature of exchange splitting in oxide ferromagnets : A spin-resolved photoemission study of EuOeng
kops.citation.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/123456789/53584">
    <dc:creator>Gerber, Tim</dc:creator>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-05-04T13:11:38Z</dcterms:available>
    <dc:contributor>Köksal, Okan</dc:contributor>
    <dc:contributor>Lömker, Patrick</dc:contributor>
    <dc:creator>Heider, Tristan</dc:creator>
    <dc:contributor>Gospodaric, Pika</dc:contributor>
    <dcterms:issued>2020</dcterms:issued>
    <dc:contributor>Gerber, Tim</dc:contributor>
    <dc:creator>Gehlmann, Mathias</dc:creator>
    <dcterms:title>Complex nature of exchange splitting in oxide ferromagnets : A spin-resolved photoemission study of EuO</dcterms:title>
    <dc:contributor>Heider, Tristan</dc:contributor>
    <dc:creator>Mlynczak, Ewa</dc:creator>
    <dc:creator>Köksal, Okan</dc:creator>
    <dcterms:abstract xml:lang="eng">The electronic structure of the ferromagnetic semiconductor EuO is investigated by means of spin- and angle-resolved photoemission spectroscopy and density functional theory. Our spin-resolved data reveals that, while the macroscopic magnetization of the sample vanishes at the Curie temperature TC, the experimentally-determined exchange splitting of the O 2p band persists at least up to TC if the picture of fluctuating spin-blocks is assumed. We discuss possible temperature-related spectral changes by analyzing ferromagnetic and antiferromagnetic phases, directional effect due to spin orbit coupling, as well as effects due to sample aging. Our calculations with a Hubbard U term reveal a complex nature of the local exchange splitting on the oxygen site and in conduction bands, shining a new light on the interpretation of previous optical and photoemission spectroscopic results.</dcterms:abstract>
    <dc:contributor>Müller, Martina</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Eschbach, Markus</dc:creator>
    <dc:creator>Lömker, Patrick</dc:creator>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:contributor>Gehlmann, Mathias</dc:contributor>
    <dc:contributor>Mlynczak, Ewa</dc:contributor>
    <dc:creator>Plucinski, Lukasz</dc:creator>
    <dc:rights>terms-of-use</dc:rights>
    <dc:contributor>Eschbach, Markus</dc:contributor>
    <dc:creator>Gospodaric, Pika</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-05-04T13:11:38Z</dc:date>
    <dc:contributor>Plucinski, Lukasz</dc:contributor>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/53584"/>
    <dc:creator>Müller, Martina</dc:creator>
    <dc:language>eng</dc:language>
  </rdf:Description>
</rdf:RDF>
kops.flag.etalAuthortrueeng
kops.flag.knbibliographytrue
relation.isAuthorOfPublication686f2372-a9df-4ad6-b26f-82dd1b9b37c2
relation.isAuthorOfPublication.latestForDiscovery686f2372-a9df-4ad6-b26f-82dd1b9b37c2

Dateien

Sammlungen

Physik: Publikationen