Title: Accurate analytic expression for the surface tension of a type-I superconductor
Authors: Boulter, CJ ×
Indekeu, Joseph #
Issue Date: 1996
Publisher: Published for the American Physical Society by the American Institute of Physics
Series Title: Physical Review B, Condensed Matter vol:54 issue:17 pages:12407-12412
Abstract: Within Ginzburg-Landau theory we calculate the surface tension of the superconducting/normal interface of a type-I superconductor. For the reduced surface tension Gamma(SC,N) we derive the low-kappa expansion Gamma(SC,N) = 2 root 2/3-1.02817 root kappa-0.13307 kappa root kappa+O(kappa(2) root kappa), where kappa is the Ginzburg-Landau parameter. Tne coefficient of root kappa agrees with an earlier calculation [T. M. Mishonov, J. Phys. (France) 51, 447 (1990)], but disagrees with a more recent estimate [J. C. Osborn and A. T. Dorsey, Phys. Rev. B 50, 15 961 (1994)], The coefficient of kappa root kappa differs only slightly from Mishonov's guess based on simple interpolation. We show that the expansion truncated at order kappa root kappa is already so accurate in the entire type-I regime 0 less than or equal to kappa less than or equal to 1/root 2 that derivation of higher-order terms is unnecessary.
ISSN: 0163-1829
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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