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Temperature dependence effective activation energy in Tl 2 Ba 2 CaCu 2 O 8 thin film
Author(s) -
Liu S. L.,
Wu G. J.,
Shan L.,
Wu J.,
Xu X. B.,
Jin X.,
Shao H. M.
Publication year - 2006
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.200541078
Subject(s) - electrical resistivity and conductivity , condensed matter physics , activation energy , superconductivity , magnetic field , materials science , high temperature superconductivity , thin film , transition temperature , thermal , chemistry , physics , thermodynamics , nanotechnology , quantum mechanics , organic chemistry
By considering the competition of thermal activation and effective pinning, a general description of temperature dependence resistivity under magnetic fields has been deduced on high temperature superconductors. The temperature dependence resistivity is a function of the energy ratio of thermal actviation and pinning. Based on vortex glass phase transition analysis, the temperature dependence activation energy can be obtained from the resistivity transition under magnetic fields. It is found that the activation energy can be scaled onto a single parabola. The experiments on Tl‐2212 thin film and other superconductors support our model. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)