STUDY OF THE 1-K PHASE-TRANSITION IN THE HEAVY-ELECTRON COMPOUND UCU5 BY MUON SPIN-RESONANCE AND NEUTRON-SCATTERING

被引：33

作者：

SCHENCK, A

BIRRER, P

GYGAX, FN

HITTI, B

LIPPELT, E

WEBER, M

BONI, P

FISCHER, P

OTT, HR

FISK, Z

机构：

[1] PAUL SCHERRER INST,CH-5232 VILLIGEN,SWITZERLAND

[2] ETH ZURICH,NEUTRONENSTREUUNG LAB,CH-5232 VILLIGEN,SWITZERLAND

[3] SWISS FED INST TECHNOL,FESTKORPERPHYS LAB,CH-8093 ZURICH,SWITZERLAND

[4] UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.65.2454

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The 1-K phase transition in UCu5, showing up in specific-heat data within the antiferromagnetic state below TN 15 K, was investigated. Neither the average internal fields seen by the + nor the magnetic and nuclear Bragg reflections in the neutron-diffraction data reflect the phase transition while the muon relaxation rates increase drastically below 1.2 K. These results are interpreted in terms of some additional small-moment magnetic order or spin-density-wave phenomenon, implying the coexistence of two rather independent electronic subsystems, one involving eeheavyee electrons, associated with the weak magnetism, and the other associated with the eeconventionalee antiferromagnetic order. © 1990 The American Physical Society.

引用

页码：2454 / 2457

页数：4