Possible marginal-Fermi-liquid behavior in dopedUPt3

Abstract

The unusual temperature dependence of the specific heat previously observed in U(${\mathrm{Pt}}_{0.94}$ ${\mathrm{Pd}}_{0.06}$ ${)}_3$ for T<4 K has been more thoroughly investigated in light of the current marginal-Fermi-liquid theories. Data include specific heat in 0 and 14 T magnetic fields, ρ, and χ for varying concentrations of Pd. Although C/T∝-lnT is obeyed over more than a decade of temperature, ρ does not obey (-αT). The influence of the magnetic transition in U(${\mathrm{Pt}}_{1\mathrm{-}\mathit{x}}$ ${\mathrm{Pd}}_{\mathit{x}}$ ${)}_3$ on the measured properties, as well as its significance for a correct theoretical explanation, is unclear.