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

被引:168
作者
Rosch, A
Schroder, A
Stockert, O
vonLohneysen, H
机构
[1] UNIV KARLSRUHE, INST PHYS, D-76128 KARLSRUHE, GERMANY
[2] RISO NATL LAB, DK-4000 ROSKILDE, DENMARK
关键词
D O I
10.1103/PhysRevLett.79.159
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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.
引用
收藏
页码:159 / 162
页数:4
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