Mechanism for the Non-Fermi-Liquid Behavior in CeCu6xAux

A. Rosch, A. Schröder, O. Stockert, and H. v. Löhneysen
Phys. Rev. Lett. 79, 159 – Published 7 July 1997
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Abstract

We propose an explanation for the recently observed non-Fermi-liquid behavior of metallic alloys CeCu6xAux: Near x=0.1, the specific heat C is proportional to Tln(T0/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 xc=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.

  • Received 15 January 1997

DOI:https://doi.org/10.1103/PhysRevLett.79.159

©1997 American Physical Society

Authors & Affiliations

A. Rosch1, A. Schröder2,3, O. Stockert2, and H. v. Löhneysen2

  • 1Institut für Theorie der Kondensierten Materie, Universität Karlsruhe, D–76128 Karlsruhe, Germany
  • 2Physikalisches Institut, Universität Karlsruhe, D–76128 Karlsruhe, Germany
  • 3Risø National Laboratory, DK-4000 Roskilde, Denmark

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Vol. 79, Iss. 1 — 7 July 1997

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