Anomalous temperature dependence of the order parameter of a superconductor with weakly correlated impurities

Details Anomalous temperature dependence of the order parameter of a superconductor with weakly correlated impurities Anomalous temperature dependence of the order parameter of a superconductor with weakly correlated impurities

2010-12-17

arxiv.org/abs/1012.3902v2

Pis`ma v ZhETF, vol. 93, iss.3, p.154 (2011)

Physics

Condensed Matter

Superconductivity

6 pages, few typos corrected

Scientific paper

It is shown that weak correlations between the pair-breaking impurities in superconductors influence a temperature dependence of the order parameter within the Ginzburg and Landau region if the correlation radius of impurities R is greater than the coherence length of the superconductor $\xi_0$.Dependence of the square of the average order parameter on a temperature difference $T_c-T$ changes its slope in a region $\xi_0\sqrt{T_c/(T_c-T)\sim R $. Influence of correlations on other thermodynamic properties of superconductors is discussed too.

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