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Type II/1 and type II/2 Superconductors
Author(s) -
de Cesare L.,
Mancini F.
Publication year - 1974
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.2220650141
Subject(s) - superconductivity , type ii superconductor , condensed matter physics , physics , critical field , type (biology) , flux pumping , flux (metallurgy) , ginzburg–landau theory , line (geometry) , order (exchange) , magnetic field , high temperature superconductivity , chemistry , mathematics , quantum mechanics , geometry , geology , organic chemistry , finance , economics , paleontology
Abstract The problem of a first‐order transition at the lower critical field in type II superconductors is investigated by means of the boson formulation of superconductivity. The critical value ϰ c of the Ginzburg‐Landau parameter which separates type II/1 from type II/2 superconductors is theoretically determined and is in good agreement with the experimental value. The distribution of the magnetic field of an isolated flux line and the interaction potential between two flux lines are also computed in the entire region including the core.