Non-Fermi-liquid scaling in ( x = 1, 1.5)

Abstract

We review the compiled measurements of the imaginary part of the dynamical magnetic susceptibility , static susceptibility , electrical resistivity and specific heat C(T) in the uranium intermetallics (x = 1, 1.5). We assess the temperature- and energy-dependences predicted by single-ion and disorder-dominated models and compare these results to experiments. For temperatures T and excitation energies in the range , T < 150 K, our analysis suggests that the dynamics of isolated uranium ions are responsible for the observed temperature and frequency scaling, although inter-ion interactions may become important at lower temperatures and frequencies.