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Magnetic‐field dependence of electrothermal conductivity in YBCO
Author(s) -
Mariño A.,
Uribe R.
Publication year - 2008
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.200743294
Subject(s) - condensed matter physics , superconductivity , magnetic field , electrical resistivity and conductivity , thermal conductivity , seebeck coefficient , materials science , conductivity , field (mathematics) , symmetry (geometry) , physics , composite material , mathematics , geometry , quantum mechanics , pure mathematics
Experimental measurements of the electrothermal conductivity ( P ) near T c , as a function of external magnetic field were carried out in undoped YBCO (123) superconducting samples. The electrothermal conductivity which relates electrical and thermal currents, depends on the applied magnetic field in high T c materials, contrary to conventional low T c superconductors where P is nearly independent of the magnetic field. The experimental P ( B , T ) data determined from resistivity and thermopower measurements were analyzed in terms of theoretical models and showed a behavior consistent with an order‐parameter symmetry (OPS) of d x 2 – y 2‐wave type. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)