Abstract
Magnetoresistance measurements have been made on amorphous Lu/sub 75/Pd/sub 25/ and Lu/sub 75/Ni/sub 25/ alloys. In the absence of contributions from spin-splitting interaction (because of the high spin-orbit scattering rate 1/tau/sub so/approx. =10/sup 14/ s/sup -1/) and superconducting fluctuations, direct comparison of experimental data with three-dimensional weak localization theory can be made. Our results follow the trend predicted by theory, but are about 20% larger. Interaction effects with a negative screening parameter can explain both the discrepancy and the order of magnitude of resistivity rho(T). We obtain the inelastic scattering time tau/sub i/(T)approx. =2 x 10/sup -10/T/sup -2/ s which can be attributed to electron-phonon processes in disordered metals, according to the theory of Bergmann and Takayama. Prior results obtained for amorphous Zr/sub 40/Cu/sub 60/ are discussed only qualitatively as this alloy does exhibit superconducting fluctuations above 0.5 K.
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