T5 law and Matthiessen's rule.

Abstract

Precise electrical resistivity mea surements on very dilute non m agnetic indium alloys show no doubt in a T 5 dependence on temperature between 1-4 K and strong deviations from Matthiessen rule. Measurements of thermal re sistivity show that the extrapolation method to obta in the data to H = 0 is correct. Comparison of the results with recent theories is discussed.