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Title
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Superconducting nanowires: quantum-confinement effect on the critical magnetic field and supercurrent
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Author
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Abstract
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| 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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Language
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English
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Source (journal)
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International journal of modern physics: B: condensed matter physics, statistical physics, applied physics. - Singapore
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Source (book)
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32nd International Workshop on Condensed Matter Theories, Aug 12-19, 2008, Loughborough Univ, Loughborough, England
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Publication
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Singapore
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World scientific
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2009
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ISSN
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0217-9792
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DOI
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10.1142/S0217979209063419
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Volume/pages
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23
:20-21
(2009)
, p. 4257-4268
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ISI
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000274525500026
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Full text (Publisher's DOI)
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