Title
Superconducting nanowires: quantum-confinement effect on the critical magnetic field and supercurrent Superconducting nanowires: quantum-confinement effect on the critical magnetic field and supercurrent
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Singapore :World scientific ,
Subject
Physics
Source (journal)
International journal of modern physics: B: condensed matter physics, statistical physics, applied physics. - Singapore
Source (book)
32nd International Workshop on Condensed Matter Theories, Aug 12-19, 2008, Loughborough Univ, Loughborough, England
Volume/pages
23(2009) :20-21 , p. 4257-4268
ISSN
0217-9792
ISI
000274525500026
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We study the effect of electron confinement on the superconducting-to-normal phase transition driven by a magnetic field and/or on the current-carrying state of the superconducting condensate in nanowires. Our investigation is based on a self-consistent numerical solution of the Bogoliubov-de Gennes equations. We show that in a parallel magnetic field and/or in the presence of supercurrent the transition from superconducting to normal phase occurs as a cascade of discontinuous jumps in the superconducting order parameter for diameters D < 10 divided by 15 nm at T = 0. The critical magnetic field exhibits quantum-size oscillations with pronounced resonant enhancements.
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