I. A. Fomin, “Anomalous temperature dependence of the order parameter of a superconductor with weakly correlated impurities”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2011, Volume 93, Issue 3,Pages <nobr>159

This article is cited in 5 papers

CONDENSED MATTER

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

I. A. Fomin^ab

^a P. L. Kapitza Institute for Physical Problems, 119334 Moscow, Russia
^b Moscow Institute of Physics and Technology, Dolgoprudny, Mosow region

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 $\xi_0$. Dependence of a 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 of impurities on other thermodynamic properties of superconductors is discussed.

Received: 16.12.2010

Language: English