A spin triplet supercurrent through the half-metallic ferromagnet CrO2

No Thumbnail Available
Files
There are no files associated with this item.
Date
2006
Authors
Keizer, Ruurd S.
Klapwijk, Teun M.
Miao, Guoxing
Xiao, Gang
Gupta, Arunava
Editors
Contact
Journal ISSN
Electronic ISSN
ISBN
Bibliographical data
Publisher
Series
URI (citable link)
DOI (citable link)
International patent number
Link to the license
EU project number
Project
Open Access publication
Collections
Restricted until
Title in another language
Research Projects
Organizational Units
Journal Issue
Publication type
Journal article
Publication status
Published
Published in
Nature ; 439 (2006), 7078. - pp. 825-827. - Springer Nature. - ISSN 0028-0836. - eISSN 1476-4687
Abstract
In general, conventional superconductivity should not occur in a ferromagnet, though it has been seen in iron under pressure. Moreover, theory predicts that the current is always carried by pairs of electrons in a spin singlet state, so conventional superconductivity decays very rapidly when in contact with a ferromagnet, which normally prohibits the existence of singlet pairs. It has been predicted that this rapid spatial decay would not occur if spin triplet superconductivity could be induced in the ferromagnet. Here we report a Josephson supercurrent through the strong ferromagnet CrO2, from which we infer that it is a spin triplet supercurrent. Our experimental set-up is different from those envisaged in the earlier predictions, but we conclude that the underlying physical explanation for our result is a conversion from spin singlet pairs to spin triplets at the interface. The supercurrent can be switched with the direction of the magnetization, analogous to spin valve transistors, and therefore could enable magnetization-controlled Josephson junctions.
Summary in another language
Subject (DDC)
530 Physics
Keywords
Conference
Review
undefined / . - undefined, undefined. - (undefined; undefined)
Cite This
ISO 690KEIZER, Ruurd S., Sebastian T. B. GÖNNENWEIN, Teun M. KLAPWIJK, Guoxing MIAO, Gang XIAO, Arunava GUPTA, 2006. A spin triplet supercurrent through the half-metallic ferromagnet CrO2. In: Nature. Springer Nature. 439(7078), pp. 825-827. ISSN 0028-0836. eISSN 1476-4687. Available under: doi: 10.1038/nature04499
BibTex
@article{Keizer2006-02-16tripl-52524,
  year={2006},
  doi={10.1038/nature04499},
  title={A spin triplet supercurrent through the half-metallic ferromagnet CrO<sub>2</sub>},
  number={7078},
  volume={439},
  issn={0028-0836},
  journal={Nature},
  pages={825--827},
  author={Keizer, Ruurd S. and Gönnenwein, Sebastian T. B. and Klapwijk, Teun M. and Miao, Guoxing and Xiao, Gang and Gupta, Arunava}
}
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/123456789/52524">
    <dc:creator>Gupta, Arunava</dc:creator>
    <dc:creator>Miao, Guoxing</dc:creator>
    <dcterms:issued>2006-02-16</dcterms:issued>
    <dc:creator>Gönnenwein, Sebastian T. B.</dc:creator>
    <dc:contributor>Miao, Guoxing</dc:contributor>
    <dc:contributor>Xiao, Gang</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Xiao, Gang</dc:creator>
    <dcterms:title>A spin triplet supercurrent through the half-metallic ferromagnet CrO&lt;sub&gt;2&lt;/sub&gt;</dcterms:title>
    <dc:contributor>Gupta, Arunava</dc:contributor>
    <dcterms:abstract xml:lang="eng">In general, conventional superconductivity should not occur in a ferromagnet, though it has been seen in iron under pressure. Moreover, theory predicts that the current is always carried by pairs of electrons in a spin singlet state, so conventional superconductivity decays very rapidly when in contact with a ferromagnet, which normally prohibits the existence of singlet pairs. It has been predicted that this rapid spatial decay would not occur if spin triplet superconductivity could be induced in the ferromagnet. Here we report a Josephson supercurrent through the strong ferromagnet CrO&lt;sub&gt;2&lt;/sub&gt;, from which we infer that it is a spin triplet supercurrent. Our experimental set-up is different from those envisaged in the earlier predictions, but we conclude that the underlying physical explanation for our result is a conversion from spin singlet pairs to spin triplets at the interface. The supercurrent can be switched with the direction of the magnetization, analogous to spin valve transistors, and therefore could enable magnetization-controlled Josephson junctions.</dcterms:abstract>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/52524"/>
    <dc:rights>terms-of-use</dc:rights>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-01-20T13:09:49Z</dcterms:available>
    <dc:creator>Keizer, Ruurd S.</dc:creator>
    <dc:contributor>Klapwijk, Teun M.</dc:contributor>
    <dc:creator>Klapwijk, Teun M.</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2021-01-20T13:09:49Z</dc:date>
    <dc:language>eng</dc:language>
    <dc:contributor>Keizer, Ruurd S.</dc:contributor>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dc:contributor>Gönnenwein, Sebastian T. B.</dc:contributor>
  </rdf:Description>
</rdf:RDF>
Internal note
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Contact
URL of original publication
Test date of URL
Examination date of dissertation
Method of financing
Comment on publication
Alliance license
Corresponding Authors der Uni Konstanz vorhanden
International Co-Authors
Bibliography of Konstanz
No
Refereed
Yes