Superconductivity in disordered thin films: giant mesoscopic fluctuations

Details Superconductivity in disordered thin films: giant mesoscopic fluctuations Superconductivity in disordered thin films: giant mesoscopic fluctuations

2005-03-31

arxiv.org/abs/cond-mat/0504002v1

Phys. Rev. Lett. 95, 057002 (2005)

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures, REVTeX 4

Scientific paper

10.1103/PhysRevLett.95.057002

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.

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