Static and Dynamic Magnetic Response of the Mixed-Valence State: Cerium-Based Alloys

Abstract

For the first time crystal-field excitations are observed in the inelastic-neutron-scattering spectra of a mixed-valence system, viz., ${\mathrm{Ce}}_{0.9\ensuremath{-}x}{\mathrm{La}}_{x}{\mathrm{Th}}_{0.1}$. Scaling relationships are established which connect various energy-related quantities, such as the $T=0$ Fermiliquid susceptibility, the valence transition temperature, and the spin-fluctuation energy as measured by the neutron scattering linewidths.