Correlated disorder as a way towards robust superconductivity

Abstract Ordinary superconductors are widely assumed insensitive to small concentrations of random nonmagnetic impurities, whereas strong disorder suppresses superconductivity and even makes superconductor-insulator transition occur. In between these limiting cases, a most fascinating regime can take place where enhances superconductivity. Hitherto, almost all theoretical studies have been conducted under the assumption that is completely independent random. real materials, however, positions impurities defects tend correlate with each other. This work shows correlations impact on making it more robust less sensitive potential. Superconducting properties therefore be controlled not only by overall density defects, but their spatial as well.