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On the domain structure near the penetration field of the intermediate state in type‐I superconductors
Author(s) -
Fahnle M.,
Kronmller H.
Publication year - 1977
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.2220790114
Subject(s) - condensed matter physics , superconductivity , type ii superconductor , penetration depth , laminar flow , physics , magnetic field , ginzburg–landau theory , magnetic flux , flux pinning , demagnetizing field , materials science , magnetization , high temperature superconductivity , mechanics , optics , quantum mechanics
The radius r and the distance a of the flux tubes in the triangular flux‐tube lattice of type‐I superconductors are determined within the framework of the Ginzburg‐Landau theory as functions of the applied magnetic field, the surface energy parameter, Δ, and the thickness, L , of a superconducting layer in the limit N → 1 ( N demagnetizing coefficient of the sample, 0 ≤ N ≤ 1). It is shown that near the penetration field of the intermediate state the Gibbs free energy of the flux‐tube structure is lower than that of a laminar domain structure.