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Title: Observation of wetting-like phase transitions in a surface-enhanced type-I superconductor
Authors: Kozhevnikov, V. F ×
Van Bael, Margriet
Sahoo, P. K
Temst, Kristiaan
Van Haesendonck, Christian
Vantomme, André
Indekeu, Joseph #
Issue Date: Mar-2007
Publisher: Iop publishing ltd
Series Title: New Journal of Physics vol:9 pages:1-7
Article number: 075
Abstract: Superconductivity in single crystal Sn samples with surface-enhanced order parameter is studied experimentally. Controllable surface enhancement is achieved by mechanical polishing or by ion irradiation. A first-order surface superconductivity transition is found in parallel magnetic fields close to the bulk critical field H-c(T) and for temperatures above 0.8T(c) up till a surface critical temperature T-cs > T-c, where T-c is the bulk critical temperature. The resulting phase diagram agrees with that predicted for interface-delocalization or wetting transitions in type-I superconductors, based on the Ginzburg - Landau theory.
URI: 
ISSN: 1367-2630
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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