Signatures of the Higgs mode in transport through a normal-metal--superconductor junction

Loading...
Thumbnail Image
Date
2020
Authors
Tang, Gaomin
Zülicke, Ulrich
Bruder, Christoph
Editors
Contact
Journal ISSN
Electronic ISSN
ISBN
Bibliographical data
Publisher
Series
ArXiv-ID
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
Physical Review Research ; 2 (2020). - 022068(R). - American Physical Society. - eISSN 2643-1564
Abstract
A superconductor subject to electromagnetic irradiation in the terahertz range can show amplitude oscillations of its order parameter. However, coupling this so-called Higgs mode to the charge current is notoriously difficult. We propose to achieve such a coupling in a particle-hole-asymmetric configurations using a DC-voltage-biased normal-metal--superconductor tunnel junction. Using the quasiclassical Green's function formalism, we demonstrate three characteristic signatures of the Higgs mode: (i) The AC charge current exhibits a pronounced resonant behavior and is maximal when the radiation frequency coincides with the order parameter. (ii) The AC charge current amplitude exhibits a characteristic nonmonotonic behavior with increasing voltage bias. (iii) At resonance for large voltage bias, the AC current vanishes inversely proportional to the bias. These signatures provide an electric detection scheme for the Higgs mode and in more complex devices pave the way for advanced functionalities.
Summary in another language
Subject (DDC)
530 Physics
Keywords
Higgs mode, normal-metal–superconductor junction,electromagnetic irradiation
Conference
Review
undefined / . - undefined, undefined. - (undefined; undefined)
Cite This
ISO 690TANG, Gaomin, Wolfgang BELZIG, Ulrich ZÜLICKE, Christoph BRUDER, 2020. Signatures of the Higgs mode in transport through a normal-metal--superconductor junction. In: Physical Review Research. American Physical Society. 2, 022068(R). eISSN 2643-1564. Available under: doi: 10.1103/PhysRevResearch.1.033098
BibTex
@article{Tang2020-02-29T08:01:34ZSigna-48909.2,
  year={2020},
  doi={10.1103/PhysRevResearch.1.033098},
  title={Signatures of the Higgs mode in transport through a normal-metal--superconductor junction},
  volume={2},
  journal={Physical Review Research},
  author={Tang, Gaomin and Belzig, Wolfgang and Zülicke, Ulrich and Bruder, Christoph},
  note={Article Number: 022068(R)}
}
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/123456789/48909.2">
    <dc:creator>Zülicke, Ulrich</dc:creator>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-10-27T09:02:07Z</dcterms:available>
    <dc:contributor>Zülicke, Ulrich</dc:contributor>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:rights>Attribution 4.0 International</dc:rights>
    <dc:language>eng</dc:language>
    <dc:creator>Bruder, Christoph</dc:creator>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:issued>2020-02-29T08:01:34Z</dcterms:issued>
    <dc:creator>Belzig, Wolfgang</dc:creator>
    <dc:contributor>Tang, Gaomin</dc:contributor>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2020-10-27T09:02:07Z</dc:date>
    <dc:contributor>Bruder, Christoph</dc:contributor>
    <dc:creator>Tang, Gaomin</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/41"/>
    <dcterms:abstract xml:lang="eng">A superconductor subject to electromagnetic irradiation in the terahertz range can show amplitude oscillations of its order parameter. However, coupling this so-called Higgs mode to the charge current is notoriously difficult. We propose to achieve such a coupling in a particle-hole-asymmetric configurations using a DC-voltage-biased normal-metal--superconductor tunnel junction. Using the quasiclassical Green's function formalism, we demonstrate three characteristic signatures of the Higgs mode: (i) The AC charge current exhibits a pronounced resonant behavior and is maximal when the radiation frequency coincides with the order parameter. (ii) The AC charge current amplitude exhibits a characteristic nonmonotonic behavior with increasing voltage bias. (iii) At resonance for large voltage bias, the AC current vanishes inversely proportional to the bias. These signatures provide an electric detection scheme for the Higgs mode and in more complex devices pave the way for advanced functionalities.</dcterms:abstract>
    <dcterms:title>Signatures of the Higgs mode in transport through a normal-metal--superconductor junction</dcterms:title>
    <bibo:uri rdf:resource="https://kops.uni-konstanz.de/handle/123456789/48909.2"/>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/48909.2/1/Tang_2-c5s363x6o0ss6.pdf"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:contributor>Belzig, Wolfgang</dc:contributor>
    <dcterms:rights rdf:resource="http://creativecommons.org/licenses/by/4.0/"/>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/48909.2/1/Tang_2-c5s363x6o0ss6.pdf"/>
  </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
Yes
Refereed
Yes

Version History

Now showing 1 - 2 of 2
VersionDateSummary
2*
2020-10-22 10:38:26
2020-03-03 10:16:04
* Selected version