The transport properties of superconducting-normal interfaces
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Abstract
The resistive and thermoelectric properties of a series of SNS sandwiches, containing different concentrations of impurity in the superconductor, have been measured. The system used for this work was In/W/In with up to 10% lead added to the indium. A technique was developed in which the interfaces were prepared by melting indium onto tungsten slices in high vacuum. The samples produced in this way were of comparable quality to those used by previous workers.
The samples with pure indium were found to obey a previously developed theory for the divergent temperature dependence of the resistance just below T