Abstract
Calculations are presented for the electronic thermal resistivity of lead and its dilute alloys, both in the normal and superconducting states. The change in the electronic distribution function as impurities are added causes a significant concentration dependence in the coefficient of the T2 term of the low-temperature thermal resistivity. This coefficient also depends on temperature, in good agreement with experimental results for pure lead. Above the Debye temperature, the corrections to the Wiedemann-Franz law are calculated, and found to be in good agreement with experiment. The ratio kappa (S)/ kappa (N) (thermal conductivities in the superconducting and normal states) is calculated below the critical temperature and found to increase as impurities are added to the pure metal.
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