Publication
Title
Correlation between characteristic energies in non-s-wave pairing superconductors
Author
Abstract
By solution of the Bethe-Goldstone equation for the Cooper pairing problem, an approximate analytic relation is derived between coherence length xi and the binding energy of the Cooper pair. This relation is then qualitatively confirmed by numerically solving the corresponding self-consistent gap equations, following the crossover from weak to strong coupling, in non-s-wave superconductors. The relation applies to non-conventional superconductors, and in particular to heavy Fermions and to high-T-c cuprates. Utilizing in addition a phenomenological link between k(B)T(c) and a characteristic energy epsilon(c) = h(2)/2m* xi(2), with m* the effective mass, major differences are exposed in the functional relation between k(B)T(c) and epsilon(c) for s-wave materials and for non-conventional superconductors. The relation between critical temperature and epsilon(c) thereby proposed correctly reflects the qualitative properties of heavy Fermion superconductors. (C) 2004 Elsevier B.V. All rights reserved.
Language
English
Source (journal)
Physics letters: A. - Amsterdam, 1967, currens
Publication
Amsterdam : 2004
ISSN
0375-9601
Volume/pages
322:5-6(2004), p. 375-383
ISI
000220123600017
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 03.01.2013
Last edited 02.07.2017
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