Local and nonlocal spin Seebeck effect in lateral Pt–Cr2O3–Pt devices at low temperatures

Lade...
Vorschaubild
Dateien
Muduli_2-a13s7wot11g1.pdf
Muduli_2-a13s7wot11g1.pdfGröße: 1.34 MBDownloads: 200
Datum
2021
Autor:innen
Muduli, Prasanta
Schlitz, Richard
Kosub, Tobias
Hübner, René
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
DOI (zitierfähiger Link)
Internationale Patentnummer
Link zur Lizenz
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Open Access Gold
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
APL Materials. American Institute of Physics (AIP). 2021, 9(2), 021122. eISSN 2166-532X. Available under: doi: 10.1063/5.0037860
Zusammenfassung

We have studied thermally driven magnon spin transport (spin Seebeck effect, SSE) in heterostructures of antiferromagnetic α-Cr2O3 and Pt at low temperatures. Monitoring the amplitude of the local and nonlocal SSE signals as a function of temperature, we found that both decrease with increasing temperature and disappear above 100 K and 20 K, respectively. Additionally, both SSE signals show a tendency to saturate at low temperatures. The nonlocal SSE signal decays exponentially for intermediate injector–detector separation, consistent with magnon spin current transport in the relaxation regime. We estimate the magnon relaxation length of our α-Cr2O3 films to be around 500 nm at 3 K. This short magnon relaxation length along with the strong temperature dependence of the SSE signal indicate that temperature-dependent inelastic magnon scattering processes play an important role in the intermediate range magnon transport. Our observation is relevant to low-dissipation antiferromagnetic magnon memory and logic devices involving thermal magnon generation and transport.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
530 Physik
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690MUDULI, Prasanta, Richard SCHLITZ, Tobias KOSUB, René HÜBNER, Artur ERBE, Denis MAKAROV, Sebastian T. B. GOENNENWEIN, 2021. Local and nonlocal spin Seebeck effect in lateral Pt–Cr2O3–Pt devices at low temperatures. In: APL Materials. American Institute of Physics (AIP). 2021, 9(2), 021122. eISSN 2166-532X. Available under: doi: 10.1063/5.0037860
BibTex
@article{Muduli2021Local-53018,
  year={2021},
  doi={10.1063/5.0037860},
  title={Local and nonlocal spin Seebeck effect in lateral Pt–Cr<sub>2</sub>O<sub>3</sub>–Pt devices at low temperatures},
  number={2},
  volume={9},
  journal={APL Materials},
  author={Muduli, Prasanta and Schlitz, Richard and Kosub, Tobias and Hübner, René and Erbe, Artur and Makarov, Denis and Goennenwein, Sebastian T. B.},
  note={Article Number: 021122}
}
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/123456789/53018">
    <dc:creator>Kosub, Tobias</dc:creator>
    <dcterms:title>Local and nonlocal spin Seebeck effect in lateral Pt–Cr&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;–Pt devices at low temperatures</dcterms:title>
    <dc:creator>Muduli, Prasanta</dc:creator>
    <dc:contributor>Goennenwein, Sebastian T. B.</dc:contributor>
    <dc:contributor>Schlitz, Richard</dc:contributor>
    <dc:contributor>Muduli, Prasanta</dc:contributor>
    <dc:language>eng</dc:language>
    <dc:creator>Goennenwein, Sebastian T. B.</dc:creator>
    <dc:rights>Attribution 4.0 International</dc:rights>
    <dcterms:abstract xml:lang="eng">We have studied thermally driven magnon spin transport (spin Seebeck effect, SSE) in heterostructures of antiferromagnetic α-Cr&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; and Pt at low temperatures. Monitoring the amplitude of the local and nonlocal SSE signals as a function of temperature, we found that both decrease with increasing temperature and disappear above 100 K and 20 K, respectively. Additionally, both SSE signals show a tendency to saturate at low temperatures. The nonlocal SSE signal decays exponentially for intermediate injector–detector separation, consistent with magnon spin current transport in the relaxation regime. We estimate the magnon relaxation length of our α-Cr&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; films to be around 500 nm at 3 K. This short magnon relaxation length along with the strong temperature dependence of the SSE signal indicate that temperature-dependent inelastic magnon scattering processes play an important role in the intermediate range magnon transport. Our observation is relevant to low-dissipation antiferromagnetic magnon memory and logic devices involving thermal magnon generation and transport.</dcterms:abstract>
    <dc:contributor>Hübner, René</dc:contributor>
    <dc:creator>Hübner, René</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-02-26T10:14:22Z</dc:date>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/53018/1/Muduli_2-a13s7wot11g1.pdf"/>
    <dc:creator>Erbe, Artur</dc:creator>
    <dc:creator>Schlitz, Richard</dc:creator>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-02-26T10:14:22Z</dcterms:available>
    <dc:contributor>Erbe, Artur</dc:contributor>
    <dc:contributor>Kosub, Tobias</dc:contributor>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/53018/1/Muduli_2-a13s7wot11g1.pdf"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:issued>2021</dcterms:issued>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by/4.0/"/>
    <dc:contributor>Makarov, Denis</dc:contributor>
    <dc:creator>Makarov, Denis</dc:creator>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/53018"/>
  </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
Ja
Diese Publikation teilen