Metal-insulator transition and superconductivity in SnAr films |
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Authors: | R. Ludwig F.S. Razavi H. Micklitz |
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Affiliation: | Ruhr-Universität Bochum, Institut für Experimentalphysik IV D-4630 Bochum 1, W.-Germany |
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Abstract: | We studied the conductivity and superconducting transition temperature Tc of SnAr films. The films were prepared by condensing the SnAr mixture on a sapphire substrate held at 5 K. A plot of the conductivity as a function of Sn concentration shows a metal-insulator transition which agrees with a percolation model consisting of Sn clusters embedded in solid Ar. A drop of Tc is observed below the percolation threshold. |
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