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

  • Condensed Matter
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Abstract

It is shown that weak correlations between pair-breaking impurities in superconductors influence the temperature dependence of the order parameter within the Ginzburg-Landau region if correlation radius of impurities R is greater than the coherence length of the superconductor ξ0. The dependence of the square of the average order parameter on a temperature difference T c − T changes its slope in a region \( \xi _0 \sqrt {{{T_c } \mathord{\left/ {\vphantom {{T_c } {\left( {T_c - T} \right)}}} \right. \kern-\nulldelimiterspace} {\left( {T_c - T} \right)}}} \sim R \). The influence of correlations of impurities on other thermodynamic properties of superconductors is discussed.

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Authors and Affiliations

  1. Kapitza Institute for Physical Problems, Russian Academy of Sciences, Moscow, 119334, Russia

    I. A. Fomin

  2. Moscow Institute of Physics and Technology, Dolgoprudnyi, Moscow region, 141700, Russia

    I. A. Fomin

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  1. I. A. Fomin
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Fomin, I.A. Anomalous temperature dependence of the order parameter of a superconductor with weakly correlated impurities. Jetp Lett. 93, 144–146 (2011). https://doi.org/10.1134/S0021364011030040

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  • DOI: https://doi.org/10.1134/S0021364011030040

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