Anomalous low-temperature transport properties of dilutePd VandPt Valloys

The electrical resistivity of several dilute $\mathrm{Pd} V$ and $\mathrm{Pt} V$ alloys has been measured from 3 to 8 K, where the phonon contribution to the resistivity—and hence conventional Matthiessen's rule deviations—are small. In all the alloys examined the total resistivity exhibits a $T^2$ form. For the $\mathrm{Pt} V$ alloys, the magnitude of this $T^2$ is close to that measured in pure Pt, but in the $\mathrm{Pd} V$ alloys this term is much smaller than that observed in the pure host. Numerical estimates for the $T^2$ term in the $\mathrm{Pd} V$ system are in better than order-of-magnitude agreement with the predictions of the localized-spin-fluctuation (lsf) theory using parameters previously deduced from the high-temperature data on this system. It is thus inferred that while both $\mathrm{Pt} V$ and $\mathrm{Pd} V$ are nonmagnetic in the static Hartree-Fock context, the latter exhibits a temperature-dependent incremental resisitivity which is consistent with the presence of lsf at the V sites.