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

A. Rosch; A. Schröder; O. Stockert; H. v. Löhneysen

doi:10.1103/PhysRevLett.79.159

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

Strongly Correlated Electrons 2019-08-15 v1

Authors: A. Rosch , A. Schröder , O. Stockert , H. v. Löhneysen

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Abstract

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.

Keywords

non-Fermi-liquid CeCu6-xAux quantum critical point ferromagnetic fluctuations specific heat resistivity

Cite

@article{arxiv.cond-mat/9701109,
  title  = {A mechanism for the non-Fermi-liquid behavior in CeCu_{6-x}Au_x},
  author = {A. Rosch and A. Schröder and O. Stockert and H. v. Löhneysen},
  journal= {arXiv preprint arXiv:cond-mat/9701109},
  year   = {2019}
}

Comments

4 pages, LaTeX, 3 figures

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