Pd/Cu site interchange and non-Fermi-liquid behavior in UCu4Pd

被引：52

作者：

Booth, CH

MacLaughlin, DE

Heffner, RH

Chau, R

Maple, MB

Kwei, GH

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

[3] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.81.3960

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

X-ray-absorption fine-structure measurements of the local structure in UCu4Pd are described which indicate a probable lattice-disorder origin for non-Fermi-liquid behavior in this material. Short Pd-Cu distances are observed, consistent with (24 +/- 3)% of the Pd atoms occupying nominally Cu sites. A "Kondo disorder" model, based on the effect on the local Kondo temperature T-K of this interchange and some additional bond-length disorder, agrees quantitatively with previous experimental susceptibility data, and therefore also with specific heat and magnetic resonance experiments. [S0031-9007(98)07530-9].

引用

收藏

页码：3960 / 3963

页数：4

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