Non-reciprocity of vortex-limited critical current in conventional superconducting micro-bridges

Kurzanzeige
dc.contributor.authorSuri, Dhavala
dc.contributor.authorKamra, Akashdeep
dc.contributor.authorMeier, Thomas N. G.
dc.contributor.authorKronseder, Matthias
dc.contributor.authorBelzig, Wolfgang
dc.contributor.authorBack, Christian H.
dc.contributor.authorStrunk, Christoph
dc.date.accessioned2022-09-07T12:45:13Z
dc.date.available2022-09-07T12:45:13Z
dc.date.issued2022eng
dc.description.abstractNon-reciprocity in the critical current has been observed in a variety of superconducting systems and has been called the superconducting diode effect. The origin underlying the effect depends on the symmetry breaking mechanisms at play. We investigate superconducting micro bridges of NbN and also NbN/magnetic insulator (MI) hybrids. We observe a large diode efficiency of ≈ 30% when an out-of-plane magnetic field as small as 25 mT is applied. In both NbN and NbN/MI hybrid, we find that the diode effect vanishes when the magnetic field is parallel to the sample plane. Our observations are consistent with the critical current being determined by the vortex surface barrier. Unequal barriers on the two edges of the superconductor strip result in the diode effect. Furthermore, the rectification is observed up to a temperature ∼10 K, which makes the device potential for diode based applications over larger temperature range than before.eng
dc.description.versionpublishedeng
dc.identifier.doi10.1063/5.0109753eng
dc.identifier.urihttps://kops.uni-konstanz.de/handle/123456789/58523
dc.language.isoengeng
dc.rightsterms-of-use
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/
dc.subjectSuperconductivity, Vortex dynamics, superconductors, Current-voltage characteristiceng
dc.subject.ddc530eng
dc.titleNon-reciprocity of vortex-limited critical current in conventional superconducting micro-bridgeseng
dc.typeJOURNAL_ARTICLEeng
dspace.entity.typePublication
kops.citation.bibtex
@article{Suri2022Nonre-58523,
  year={2022},
  doi={10.1063/5.0109753},
  title={Non-reciprocity of vortex-limited critical current in conventional superconducting micro-bridges},
  volume={121},
  issn={0003-6951},
  journal={Applied Physics Letters},
  author={Suri, Dhavala and Kamra, Akashdeep and Meier, Thomas N. G. and Kronseder, Matthias and Belzig, Wolfgang and Back, Christian H. and Strunk, Christoph},
  note={Article Number: 102601}
}
kops.citation.iso690SURI, Dhavala, Akashdeep KAMRA, Thomas N. G. MEIER, Matthias KRONSEDER, Wolfgang BELZIG, Christian H. BACK, Christoph STRUNK, 2022. Non-reciprocity of vortex-limited critical current in conventional superconducting micro-bridges. In: Applied Physics Letters. American Institute of Physics (AIP). 2022, 121, 102601. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/5.0109753deu
kops.citation.iso690SURI, Dhavala, Akashdeep KAMRA, Thomas N. G. MEIER, Matthias KRONSEDER, Wolfgang BELZIG, Christian H. BACK, Christoph STRUNK, 2022. Non-reciprocity of vortex-limited critical current in conventional superconducting micro-bridges. In: Applied Physics Letters. American Institute of Physics (AIP). 2022, 121, 102601. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/5.0109753eng
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source.publisherAmerican Institute of Physics (AIP)eng

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