Title
Superconducting nanowires: quantum-confinement effect on the critical magnetic field and supercurrent
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
conferenceObject
Publication
Singapore :World Scientific, [*]
Subject
Physics
Source (book)
Proceedings 32nd International Workshop on Condensed Matter Theories, August 12-19, 2008, Loughborough, England / Kusmartsev, F. [edit.]
ISBN - Hoofdstuk
978-981-4289-14-6
ISI
000278418300025
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 held exhibits quantum-size oscillations with pronounced resonant enhancements.
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