NON-FERMI-LIQUID SCALING OF THE MAGNETIC RESPONSE IN UCU5-XPDX (X=1,1.5)

被引：200

作者：

ARONSON, MC

OSBORN, R

ROBINSON, RA

LYNN, JW

CHAU, R

SEAMAN, CL

MAPLE, MB

机构：

[1] ARGONNE NATL LAB, DIV MAT SCI, ARGONNE, IL 60439 USA

[2] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA

[3] NIST, DIV REACTOR RADIAT, GAITHERSBURG, MD 20899 USA

[4] UNIV CALIF SAN DIEGO, LA JOLLA, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.75.725

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have determined the magnetic response S(omega) of UCu5-xPdx (x = 1, 1.5) for temperatures T ranging from 12 to 300 K and energy transfers omega from 0.5 to 200 meV. S(omega) is virtually identical in the two compounds, displaying localized moment dynamics for omega greater than or similar to 25 meV. For omega < 25 meV, temperature provides the only energy scale for the magnetic excitations with the dynamical susceptibility described by a universal scaling function chi''(omega,T) similar to omega-(1/3)Z(omega/T). We argue that S(omega) represents critical scattering associated with a T=0 phase transition, whose origin lies with the magnetic screening of individual uranium ions.

引用

页码：725 / 728

页数：4

共 36 条

[1] DIRECT OBSERVATION OF SPIN FLUCTUATIONS IN THE HEAVY-FERMION SYSTEM UPT3 [J].