OPTICAL PROBING OF THE ANTIFERROMAGNETIC PHASE-TRANSITIONS IN THE HEAVY-ELECTRON COMPOUNDS U2ZN17 AND UCU5

被引：16

作者：

DEGIORGI, L

OTT, HR

DRESSEL, M

GRUNER, G

FISK, Z

机构：

[1] UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024

[2] LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545

来源：

EUROPHYSICS LETTERS | 1994年 / 26卷 / 03期

关键词：

D O I：

10.1209/0295-5075/26/3/011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the complete electrodynamic response of the heavy-electron compounds U2Zn17 and UCu5. Particular emphasis has been devoted to the optical evidence of the antiferromagnetic phase transitions at 9.7 K and 15 K for U2Zn17 and UCu5, respectively. In UCu5, we found an absorption in the far infrared, which is ascribed to excitations across a spin-density-wave-type gap. This feature is absent in U2Zn17. We argue that UCu5 belongs to a characteristically different class of antiferromagnets than U2Zn17 which represents the class of heavy-electron compounds with localized magnetic moments.

引用

页码：221 / 226

页数：6

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