Abstract
The transport coefficients in a Kondo superconductor have been calculated numerically in the framework of the Müller-Hartmann and Zittartz depairing theory. The calculations have been performed for the ultrasonic attenuation rate α S and the thermal conductivity K S . For certain typical values of T K / T c0 , where T K is the Kondo temperature and T c0 is the superconducting transition temperature in the absence of magnetic impurities, the temperature variation of α S and K S shows very interesting behavior corresponding to the reentrance of superconductivity. Results are compared with the experimental data on the Zn–Mn system obtained by Lou and Bömmel for α S and by Sánchez for K S . Our calculations explain well the experimental data. They are also compared with the results based on the depairing theory by Abrikosov and Gor'kov and by Shiba.
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