Abstract
We report the initial results of SQUID voltmeter measurements on Cu-alloy wires which contain elongated μm-scale inclusions of superconducting Nb. Below the transition temperature T c of the Nb inclusions the wires have a temperature-dependent resistance which can be fit to R ∝ (T - T cl) s where s = 1.06 ± 0.04. We develop a simple model employing percolation theory to explain this behavior.
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