THERMAL AND ELECTRICAL RESISTIVITIES OF ALUMINUM BELOW 4.2-K

High-accuracy thermal conductivity measurements were carried out on tw o samples of pure aluminium below 4.2 K. Along with electrical resisti vity measurements on one of the samples and high-accuracy electrical r esistivity measurements available in the literature, these results per mitted a determination of the electron-electron scattering terms in th e thermal and electrical resistivities. The coefficients of these term s are in very good agreement with the values predicted by MacDonald. I n addition, the electron-phonon component rho(ep) of the electrical re sistivity was successfully separated from the component rho(d) due to deviations from Matthiessen's rule.