Crystal field triplets: A new route to non-Fermi-liquid physics

A model for crystal field triplet ground states of rare earth or actinide i ons with dipolar and quadrupolar couplings to conduction electrons is studi ed for the first time with renormalization group methods. The quadrupolar c oupling leads to a new nontrivial, non-Fermi-liquid fixed point, which surv ives in an intermediate valence Anderson model. The calculated magnetic sus ceptibility displays one parameter scaling, going as T-alpha (alpha approxi mate to 0.4) at intermediate temperatures, reminiscent of the non-Fermi-liq uid alloy UCu5-xPdx.