A mechanism for the non-Fermi-liquid behavior in CeCu_{6-x}Au_x

Details A mechanism for the non-Fermi-liquid behavior in CeCu_{6-x}Au_x A mechanism for the non-Fermi-liquid behavior in CeCu_{6-x}Au_x

1997-01-15

arxiv.org/abs/cond-mat/9701109v1

Phys. Rev. Lett. 79 (1997), 159

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, LaTeX, 3 figures

Scientific paper

10.1103/PhysRevLett.79.159

We propose an explanation for the recently observed non-Fermi-liquid behavior of metallic alloys CeCu_{6-x}Au_x: near x=0.1, the specific heat c is proportional to T \ln (T_0/T) and the resistivity increases linearly with temperature T over a wide range of T. These features follow from a model in which three-dimensional conduction electrons are coupled to two-dimensional critical ferromagnetic fluctuations near the quantum critical point, x_{c}=0.1. This picture is motivated by the neutron scattering data in the ordered phase (x=0.2) and is consistent with the observed phase diagram.

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