Condensed-Matter Physics & Materials Science Seminar

"Superconductivity in disordered thin films: giant mesoscopic fluctuations"

Presented by Mikhail Skvortsov, Russia

Friday, May 19, 2006, 11:00 am — Small Seminar Room, Bldg. 510

We discuss the intrinsic inhomogeneities of superconductive properties
of uniformly disordered thin films with a large dimensionless conductance g.
It is shown that mesoscopic fluctuations, which usually contain a small
factor 1/g, are crucially enhanced near the quantum critical point
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 the percolative nature
of the thermal superconductive transition.

Hosted by: Andrei Chitov

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