Open AccessTHE LONGITUDINAL CRITICAL CURRENT OF A THIN FILM OF TYPE II SUPERCONDUCTORS
Author(s) -
Wu Hang-Sheng,
Gu Yi-Ming
Publication year - 1983
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.32.607
Subject(s) - superconductivity , current (fluid) , condensed matter physics , critical current , ideal (ethics) , materials science , thin film , physics , thermodynamics , nanotechnology , law , political science
The structure of the mixed state of a current-carrying thin film of ideal type II superconductors in longitudinal magnetic field He is analysed. We show that the lossless current flow through the films in the mixed state is possible only if He is larger than Hc1)(d). The curves of longitudinal critical current obtained have complex structure and show peak effect in general. The main feature of the theoretical Ic-He curve of the films with thickness d larger than 5λ is identical with that observed by Heaton and Rose-Innes in Nb55Ta45 alloys.