Superconductivity in disordered thin films: giant mesoscopic fluctuations

Abstract

We discuss intrinsic inhomogeneities of superconductive properties of uniformly disordered thin films with large dimensionless conductance g. It is shown that mesoscopic fluctuations, which usually contain a small factor 1/g, are crucially enhanced near the critical conductance g_c >> 1 where superconductivity is destroyed at T=0 due to Coulomb suppression of the Cooper attraction. This leads to strong spatial fluctuations of the local transition temperature and thus to percolative nature of the thermal superconductive transition.

4 pages, 3 figures, REVTeX 4

References in corpus (4)

• Disorder and Quantum Fluctuations in Superconducting Films in Strong Magnetic Fields
• Suppression of $\bbox{T_c}$ in superconducting amorphous wires
• Gap Fluctuations in Inhomogeneous Superconductors
• Critical States in Disordered Superconducting Films

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