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Proximity effect model of ultranarrow NbN strips

Charaev, Ilya and Silbernagel, T and Bachowsky, B and Kuzmin, Artem and Doerner, Stefan and Ilin, Konstantin and Semenov, Alexej and Roditchev, D and Vodolazov, Denis and Siegel, Michael (2017) Proximity effect model of ultranarrow NbN strips. Physical Review B, 96 (184517), p. 13. American Physical Society. doi: 10.1103/PhysRevB.96.184517. ISSN 2469-9950.

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We show that narrow superconducting strips in superconducting (S) and normal (N) states are universally described by the model presenting them as lateral NSN proximity systems in which the superconducting central band is sandwiched between damaged edge bands with suppressed superconductivity. The width of the superconducting band was experimentally determined from the value of magnetic field at which the band transits from the Meissner state to the static vortex state. Systematic experimental study of 4.9-nm-thick NbN strips with widths in the interval from 50 nm to 20 mum, which are all smaller than the Pearl length, demonstrates gradual evolution of the temperature dependence of the critical current with the change of the strip width.

Item URL in elib:https://elib.dlr.de/119868/
Document Type:Article
Title:Proximity effect model of ultranarrow NbN strips
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Charaev, IlyaUniversity of KarlsruheUNSPECIFIEDUNSPECIFIED
Silbernagel, Tuniversity of karlsruheUNSPECIFIEDUNSPECIFIED
Bachowsky, Buniversity of karlsruheUNSPECIFIEDUNSPECIFIED
Kuzmin, Artemuniversity of karlsruheUNSPECIFIEDUNSPECIFIED
Doerner, Stefanuniversity of KarlsruheUNSPECIFIEDUNSPECIFIED
Ilin, KonstantinUniversity of KarlsruheUNSPECIFIEDUNSPECIFIED
Roditchev, DInstitut des Nanosciences de Paris, CNRS-UMR 7588, Université Pierre et Marie Curie-Paris 6 UPMC, 4 place Jussieu, 75252, Paris, FranceUNSPECIFIEDUNSPECIFIED
Vodolazov, DenisInstitute for Physics of Microstructures, Russian Academy of Sciences, 603950, Nizhny Novgorod, GSP-105, RussiaUNSPECIFIEDUNSPECIFIED
Siegel, MichaelUniversity of KarlsruheUNSPECIFIEDUNSPECIFIED
Date:17 November 2017
Journal or Publication Title:Physical Review B
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:p. 13
Publisher:American Physical Society
Keywords:proximity effect, thin NbN films, critical current, edge defects
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical Technologies and Applications
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Semenov, Prof.Dr. Alexey
Deposited On:07 May 2018 10:02
Last Modified:19 Oct 2021 09:49

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