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VOLUME 93 (2011) | ISSUE 3 | PAGE 159
Anomalous temperature dependence of the order parameter of a superconductor with weakly correlated impurities
Abstract
It is shown that weak correlations between pair-breaking impurities in superconductors influence the temperature dependence of the order parameter within the Ginzburg and Landau region if correlation radius of impurities R is greater than the coherence length of the superconductor ξ0. Dependence of a square of the average order parameter on a temperature difference Tc-T changes its slope in a region \xi_0\sqrt{T_c/(T_c-T)}\sim R. Influence of correlations of impurities on other thermodynamic properties of superconductors is discussed.