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Boundaries of Metastable States in type II Superconductors
Author(s) -
Shehata L. N.
Publication year - 1980
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220970231
Subject(s) - condensed matter physics , superconductivity , vortex , type ii superconductor , metastability , flux (metallurgy) , critical field , flux pinning , field (mathematics) , magnetic field , magnetic flux , surface (topology) , layer (electronics) , physics , vacancy defect , materials science , critical current , thermodynamics , nanotechnology , geometry , quantum mechanics , mathematics , pure mathematics , metallurgy
For a cylindrical type‐II superconductor in an external magnetic field H 0 parallel to the sample surface the values are calculated for the critical exit field H ex ( B ) where a flux‐vacancy may be formed in the layer of vortices nearest to the surface and the critical entry field H en ( B ) where a new flux layer may be formed. The interaction of vortex lines with large‐scale surface distortions is also considered and shows a decrease in the value of the penetrating field in agreement with experimental results.