Non-Fermi-liquid behaviour in U2Pt2In

被引：18

作者：

Estrela, P

de Visser, A

de Boer, FR

Nieuwenhuys, GJ

Pereira, LCJ

Almeida, M

机构：

[1] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands

[2] Rijksuniv Leiden, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands

[3] Inst Tecnol Quim, Dept Quim, P-2686 Sacavem, Portugal

来源：

PHYSICA B-CONDENSED MATTER | 1999年 / 259-61卷

关键词：

U2Pt2In; non-Fermi-liquid; specific heat; mu SR;

D O I：

10.1016/S0921-4526(98)00706-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Specific-heat c(T) data taken on single-crystalline samples of the heavy-electron material U2Pt2In show that c proportional to - T In T in the temperature interval 0.1-6 K, which classifies U2Pt2In as a non-Fermi-liquid (NFL) material. Further support for a NFL ground state is provided by electrical resistivity and magnetic susceptibility data. Absence of weak-magnetic ordering is confirmed by mu SR experiments. The location of U2Pt2In close to the magnetic/non-magnetic border line in a Doniach-type phase diagram suggests that a quantum phase transition is at the origin of the NFL behaviour. However, a Kondo-disorder scenario cannot be excluded. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：409 / 411

页数：3

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