Crystal Field Triplets: A New Route to Non-Fermi Liquid Physics

Details Crystal Field Triplets: A New Route to Non-Fermi Liquid Physics Crystal Field Triplets: A New Route to Non-Fermi Liquid Physics

1999-03-20

arxiv.org/abs/cond-mat/9903311v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures, REVTeX

Scientific paper

10.1103/PhysRevLett.83.2421

A model for crystal field triplet ground states on rare earth or actinide ions with dipolar and quadrupolar couplings to conduction electrons is studied for the first time with renormalization group methods. The quadrupolar coupling leads to a new nontrivial, non-Fermi liquid fixed point, which survives in an intermediate valence Anderson model. The calculated magnetic susceptibility displays one parameter scaling, going as $T^{-\alpha}$ ($\alpha \approx 0.4$) at intermediate temperatures, reminiscent of the non-Fermi liquid alloy UCu_{5-x}Pd_x.

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