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Thermodynamic Scaling Functions of Three‐Dimensional Anisotropic Superconductors in the Presence of a Magnetic Field with Arbitrary Direction
Author(s) -
Calero J.M.,
Granada J.C.,
da Silva E.Z.
Publication year - 2000
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 - 10.1002/1521-3951(200007)220:1<525::aid-pssb525>3.0.co;2-t
Subject(s) - anisotropy , scaling , superconductivity , condensed matter physics , magnetic field , magnetization , physics , ginzburg–landau theory , type ii superconductor , critical field , field (mathematics) , magnetic anisotropy , quantum mechanics , mathematics , geometry , pure mathematics
A nonperturbative method for the evaluation of thermodynamic scaling functions in the critical region of three‐dimensional anisotropic type‐II superconductors is extended for the case of external magnetic fields with arbitrary angles with respect to the anisotropy axis. The calculations are carried out in the framework of the Ginzburg‐Landau theory. Explicit relations are obtained for the angular dependence of the magnetization and specific heat. Our theoretical results are in good agreement with experiments performed in untwinned single crystals of YBa 2 Cu 3 O 7– δ .