Compensation of Magnetic Impurity Effect in Superconductors by Radiation Damage

TL;DR

This paper investigates how radiation damage can counteract the suppression of superconducting transition temperature ($T_c$) caused by magnetic impurities, using theoretical models that fit experimental data.

Contribution

It demonstrates that radiation damage can compensate magnetic impurity effects on $T_c$ and links Gor'kov's formalism with KO theory.

Findings

Radiation damage restores $T_c$ in magnetic impurity-laden superconductors.

KO theory effectively models the radiation compensation effect.

Gor'kov's formalism aligns with KO theory under pairing constraints.

Abstract

Compensation of the reduction of $T_{c}$ caused by magnetic impurities has been observed as a consequence of radiation damage. Using the recent theory by Kim and Overhauser (KO) we consider the effect of radiation damage on the $T_{c}$ of superconductors having magnetic impurities. We find a good fitting to the experimental data. It is also pointed out that Gor'kov's formalism with the pairing constraint derived from the Anomalous Green's function leads to KO theory.