Kondo Effect and Localized Spin Fluctuations in the Zinc-3d-Transition-Metal System

Very high-accuracy resistance measurements on dilute alloys of Mn, Cr, and Fe in zinc are presented. In all three systems the resistivity at high temperatures has a ${log}_{10}T$ dependence but at the lowest temperatures of measurement a $T^2$ dependence is observed. The resistivity behavior is compared with the predictions of the $\overrightarrow{\mathrm{s}}·\overrightarrow{\mathrm{S}}$ and the spin-fluctuation models. Measurements are also presented of the residual resistivity of the Zn-$3d$-transition-metal series extrapolated to $T=0\mathrm{}°$K. It is found that the residual resistivity can be explained in terms of a model of an unmagnetized Friedel virtual bound state. Previous measurements on the zinc-$3d$-transition-metal series have been summarized in the Appendix.