mu SR studies of Kondo disorder in UCu5-xPdx and CeCu5.9Au0.1

被引：6

作者：

MacLaughlin, DE

Bernal, OO

Amato, A

Feyerherm, R

Gygax, FN

Schenck, A

Heffner, RH

Le, LP

Nieuwenhuys, GJ

Andraka, B

vonLohneysen, H

Stockert, O

Ott, HR

机构：

[1] CALIF STATE UNIV LOS ANGELES,LOS ANGELES,CA 90032

[2] ETH ZURICH,ITP,CH-5232 VILLIGEN,SWITZERLAND

[3] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

[4] LEIDEN UNIV,KAMERLINGH ONNES LAB,NL-2300 RA LEIDEN,NETHERLANDS

[5] UNIV FLORIDA,GAINESVILLE,FL 32611

[6] UNIV KARLSRUHE,INST PHYS,D-76128 KARLSRUHE,GERMANY

[7] ETH HONGGERBERG,FESTKORPERPHYS LAB,CH-8093 ZURICH,SWITZERLAND

来源：

PHYSICA B | 1997年 / 230卷

基金：

美国国家科学基金会;

关键词：

UCu5-xPdx; CeCu5.9Au0.1; non-Fermi liquid system; mu SR spectroscopy;

D O I：

10.1016/S0921-4526(96)00760-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Muon spin rotation (mu SR) spectra in the non-Fermi-liquid (NFL) heavy-fermion alloys UCu5-xPdx (x = 1.0 and 1.5) and CeCu5.9Au0.1 yield estimates of the rms width (delta chi)(rms) of the inhomogeneous susceptibility distribution in these systems. In UCu5-xPdx, the temperature dependence of (delta chi)(rms) indicates a wide distribution of Kondo temperatures T-K, resulting in a significant number of uncompensated U spins with low T-K which cause NFL behavior. In contrast, mu SR lines in CeCu5.9Au0.1 are too narrow for such ''Kondo disorder'' to account for NFL properties unless, as seems unlikely, the correlation length for the susceptibility disorder is long in this alloy.

引用

页码：606 / 609

页数：4

共 15 条

[1] HEAVY-NON-FERMI-LIQUID BEHAVIOR IN U(CU,PD)5 [J].