Nonlinear susceptibility in U0.9Th0.1Be13: Direct test of a quadrupolar Kondo ground state

被引：2

作者：

Aliev, FG

Vieira, S

Villar, R

Martinez, JL

机构：

[1] UNIV AUTONOMA MADRID, DEPT FIS MAT CONDENSADA, CIII, E-28049 MADRID, SPAIN

[2] UNIV AUTONOMA MADRID, DEPT FIS MAT CONDENSADA, CIII, E-28049 MADRID, SPAIN

[3] MOSCOW MV LOMONOSOV STATE UNIV, DEPT PHYS, MOSCOW 119899, RUSSIA

来源：

PHYSICA B-CONDENSED MATTER | 1996年 / 223-24卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(96)00152-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We use nonlinear susceptibility measurements at different fixed temperatures chi(3)(T) as a direct experimental test for magnetism of the U(0.9)Th(0.1)Be(13) ground state, where thermodynamic and transport properties were observed recently to be consistent with the quadrupolar two-channel Kondo effect. At T < 6 K we found chi(3)(T) dependence, corresponding to the quadrupolar Kondo ground state. The experimental data may be understood as due to almost degenerate (for UBe(13)) and closely situated (for U(0.9)Th(0.1)Be(13)) Gamma(3) and Gamma(6) ground-state levels. In the dilute limit (U(0.07)Th(0.93)Be(13)) the ground state of the U-atom is found to be nonmagnetic quadrupolar.

引用

页码：475 / 477

页数：3

共 19 条

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