Divergent Fluctuations in Superconducting Films
J. E. CrowBrookhaven National Laboratory, Upton, New YorkRichard S. ThompsonBrookhaven National Laboratory, Upton, New YorkM. A. KleninBrookhaven National Laboratory, Upton, New YorkAnil K. BhatnagarBrookhaven National Laboratory, Upton, New York
1970en
ABI
Abstract
We have observed anomalously broad resistive transitions in superconducting films and have shown that the widths gradually reduce to the usual Aslamazov-Larkin value when a magnetic field is applied parallel to the film. These results are explained by adding to the Aslamazov-Larkin theory another fluctuation contribution to the conductivity of the type first proposed by Maki, which for thin films is logarithmically divergent with a cutoff proportional to the pair-breaking interactions.
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