Local superconductivity in ultrathin Sn films
B. G. OrrSchool of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455Heinrich M. JaegerSchool of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455A. M. GoldmanSchool of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455
1985en
ABI
Abstract
The thickness dependence of superconductivity has been investigated in ultrathin Sn films near the threshold for normal-state conduction. An evolution from insulating to metallic superconducting behavior is observed with increasing thickness and decreasing sheet resistance. A striking feature of the data is the observation of quasireentrant superconductivity which may be a consequence of the existence of local rather than global superconducting order.
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