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Fluctuation effects in superconducting nanostrips

Engel, Andreas and Semenov, Alexey and Hübers, Heinz-Wilhelm and Il'in, Konstantin and Siegel, Michael (2006) Fluctuation effects in superconducting nanostrips. Physica C, 444 (1-2), pp. 12-18. Elsevier. DOI: 10.1016/j.physc.2006.05.079.

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Official URL: http://www.elsevier.com/locate/phys


Superconducting fluctuations in long and narrow strips made from ultrathin NbN films, have been investigated. For large bias currents close to the critical current fluctuations led to localized, temporary transitions into the normal conducting state, which were detected as voltage transients developing between the strip ends. We present models based on fluctuations in the Cooper pair density and current-assisted thermal-unbinding of vortex-antivortex pairs, which explain the current and temperature dependence of the experimental fluctuation rates.

Document Type:Article
Title:Fluctuation effects in superconducting nanostrips
AuthorsInstitution or Email of Authors
Engel, AndreasPhysics Institute, University of Zurich, Switzerland
Semenov, AlexeyUNSPECIFIED
Hübers, Heinz-WilhelmUNSPECIFIED
Il'in, KonstantinInstitute of Micro- and Nano-Electronic Systems, University of Karlsruhe, Karlsruhe, Germany
Siegel, MichaelInstitute of Micro- and Nano-Electronic Systems, University of Karlsruhe, Karlsruhe, Germany
Date:September 2006
Journal or Publication Title:Physica C
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 12-18
Keywords:Low-dimensional superconducting structures, Fluctuations, Vortices
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Projekt SOFIA (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Prof.Dr. Alexey Semenov
Deposited On:23 Oct 2006
Last Modified:27 Apr 2009 13:09

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