The spin wave dispersion of NdCu2 in strong magnetic fields

被引：3

作者：

Kramp, S ^{[1
]}

Loewenhaupt, M

Rotter, M

机构：

[1] Tech Univ Dresden, Inst Angew Phys, D-01062 Dresden, Germany

[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

来源：

PHYSICA B | 2000年 / 276卷

关键词：

magnetic anisotropy; spin waves; NdCu2; inelastic neutron scattering;

D O I：

10.1016/S0921-4526(99)01387-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The study of the spin wave excitation spectrum in NdCu2 revealed a pronounced minimum which forms an energy gap. Previous experiments showed that the gap energy remains finite in external magnetic fields parallel to the b-axis. In this paper we report on measurements of the spin wave dispersion in strong magnetic fields applied parallel to the c-direction (hard magnetization axis). The spin wave gap changes its position and soft mode behavior at a magnetic phase transition is observed. The comparison with the dispersion at mu(0)H(11b) = 3 T reveals the anisotropy between (ac)-plane and h-axis. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：628 / 629

页数：2

共 4 条

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