Mechanism for the non-Fermi-liquid behavior in CeCu6-xAux

A. Rosch; A. Schröder; O. Stockert; H. von Lohneysen

doi:10.1103/PhysRevLett.79.159

Mechanism for the non-Fermi-liquid behavior in CeCu₆_-_xAu_x

A. Rosch, A. Schröder, O. Stockert, H. von Lohneysen

Research output: Contribution to journal › Journal article › Research

Abstract

We propose an explanation for the recently observed non-Fermi-liquid behavior of metallic alloys CeCu6-xAux: 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.

Original language	English
Journal	Physical Review Letters
Volume	79
Issue number	1
Pages (from-to)	159-162
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.79.159
Publication status	Published - 1997

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abstract = "We propose an explanation for the recently observed non-Fermi-liquid behavior of metallic alloys CeCu6-xAux: 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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