Sharpening of the Resistive Transition of a Superconductor with the Addition of Paramagnetic Impurities
- 1 October 1971
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 4 (7) , 2185-2189
- https://doi.org/10.1103/physrevb.4.2185
Abstract
We present evidence demonstrating that the addition of magnetic moments to a superconductor suppresses the Maki-Thompson contribution to the fluctuation conductivity. Measurements of the resistive transition of aluminum films with erbium impurities exhibit a sharpening of the transition with increasing impurity concentration which can be explained quantitatively using Thompson's scheme for regularizing the Maki-Thompson conductivity diagrams.Keywords
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