Nucleation of superconducting pairing states at mesoscopic scales at zero temperature

Details Nucleation of superconducting pairing states at mesoscopic scales at zero temperature Nucleation of superconducting pairing states at mesoscopic scales at zero temperature

1998-07-24

arxiv.org/abs/cond-mat/9807334v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, no figures

Scientific paper

10.1103/PhysRevLett.81.4188

We find the spin polarized disordered Fermi liquids are unstable to the nucleation of superconducting pairing states at mesoscopic scales even when magnetic fields which polarize the spins are substantially higher than the critical one. We study the probability of finding superconducting pairing states at mesoscopic scales in this limit. We find that the distribution function depends only on the film conductance. The typical length scale at which pairing takes place is universal, and decreases when the magnetic field is increased. The number density of these states determines the strength of the random exchange interactions between mesoscopic pairing states.

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