Open AccessModified Kosterlitz-Thouless transition model for the temperature dependence of the resistivity of anisotropic superconductors
Author(s) -
Gaofeng Ji,
Shengli Liu
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.4148
Subject(s) - condensed matter physics , electrical resistivity and conductivity , scaling , anisotropy , kosterlitz–thouless transition , superconductivity , coulomb , transition temperature , physics , phase transition , classical xy model , materials science , magnetic field , quantum mechanics , electron , geometry , mathematics
Based on the Kosterlitz-Thouless (KT) phase transition model of two-dimensional systems, by introducing the thermal activation energy and the mean height of the pinning landscape into the correlation length, a modified KT transition model has been proposed to study the temperature dependence of the resistivity transition in anisotropic superconductors. This modified KT transition model is consistent with the Coulomb-Gas (CG) scaling law and the Halperin-Nelson relation. And it is applied to study the scaling behavior of the resistivity transition of Tl2Ba2CaCu2Ox (Tl-2212) thin film under various intensities of magnetic field. The calculated mean height of the pinning landscape from the resistivity curve depends on the temperature linearly, which supports the proposed model.