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Geometry-induced reduction of the critical current in superconducting nanowires

Henrich, Dagmar and Reichensperger, P. and Hofherr, M. and Meckbach, J.M. and Ilin, Konstantin and Siegel, Michael and Semenov, A. and Zotova, Anna and Vodolazov, Denis (2012) Geometry-induced reduction of the critical current in superconducting nanowires. Physical Review B, 86, pp. 1-5. American Physical Society. DOI: 10.1103/PhysRevB.86.144504

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Abstract

Reduction of the critical current in narrow superconducting NbN lines with sharp and rounded bends with respect to the critical current in straight lines was studied at different temperatures.We compare our experimental results with the reduction expected in the framework of the London model and the Ginsburg-Landau model. We have experimentally found that the reduction is significantly less than either model predicts. We also show that in our NbN lines the bends mostly contribute to the reduction of the critical current at temperatures well below the superconducting transition temperature.

Item URL in elib:https://elib.dlr.de/78815/
Document Type:Article
Title:Geometry-induced reduction of the critical current in superconducting nanowires
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Henrich, DagmarInstitut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstrasse 16, 76187 Karlsruhe, GermanyUNSPECIFIED
Reichensperger, P.Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstrasse 16, 76187 Karlsruhe, GermanyUNSPECIFIED
Hofherr, M.Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstrasse 16, 76187 Karlsruhe, GermanyUNSPECIFIED
Meckbach, J.M.Institut für Mikro- und Nanoelektronische Systeme (IMS), Karlsruher Institut für Technolgie (KIT), Hertzstrasse 16, 76187 Karlsruhe, GermanyUNSPECIFIED
Ilin, KonstantinUniversity of KarlsruheUNSPECIFIED
Siegel, MichaelUniversität KarlsruheUNSPECIFIED
Semenov, A.alexei.semenov (at) dlr.deUNSPECIFIED
Zotova, AnnaInstitute for Physics of Microstructures, Russian Academy of Sciences, 603950, Nizhny Novgorod, GSP-105, RussiaUNSPECIFIED
Vodolazov, DenisInstitute for Physics of Microstructures, Russian Academy of Sciences, 603950, Nizhny Novgorod, GSP-105, RussiaUNSPECIFIED
Date:October 2012
Journal or Publication Title:Physical Review B
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:86
DOI :10.1103/PhysRevB.86.144504
Page Range:pp. 1-5
Publisher:American Physical Society
Status:Published
Keywords:Superconducting nanowires, current crowding, critical current
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben IR-Sensorik, IR-Missionsprojekte
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Deposited By: Semenov, Prof.Dr. Alexey
Deposited On:11 Dec 2012 14:09
Last Modified:06 Sep 2019 15:29

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