Excess Resistance Effect in a Normal Metal Contacting a Superconductor
A. Kadigrobov, R. Shekhter, and M. Jonson
TL;DR
This paper investigates the excess resistance effect observed in pure normal metal contacts with superconductors, analyzing the conditions that lead to a decrease in resistance after the superconductor transitions to the normal state.
Contribution
It identifies the specific conditions under which the excess resistance effect occurs in normal metal-superconductor contacts.
Findings
Excess resistance decreases after superconductor transitions to normal state.
Conditions for the effect depend on sample purity and contact properties.
Theoretical analysis of resistance behavior in normal-superconductor contacts.
Abstract
In relatively pure normal samples contacting a superconductor we consider the excess resistance effect (that is a decrease of the total electrical resistance of the sample after transition of the superconducting part into the normal state) and determine conditions under which the effect arises.
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