1979 年 46 巻 5 号 p. 1444-1450
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 αS and the thermal conductivity KS. For certain typical values of TK⁄Tc0, where TK is the Kondo temperature and Tc0 is the superconducting transition temperature in the absence of magnetic impurities, the temperature variation of αS and KS 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 αS and by Sánchez for KS. 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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