DYNAMICS OF LONGITUDINAL AND TRANSVERSE FLUCTUATIONS ABOVE TC IN EUS

被引：21

作者：

BONI, P

GORLITZ, D

KOTZLER, J

MARTINEZ, JL

机构：

[1] UNIV HAMBURG,INST ANGEW PHYS,W-2000 HAMBURG 36,GERMANY

[2] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.43.8755

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using inelastic scattering of polarized neutrons near a finite Bragg reflection, the dynamics of longitudinal sigma-S(q)-parellel-to-q and transverse sigma-S(q) perpendicular-to-q spin fluctuations have been measured. The relaxation rates gamma(a) follow rather precisely the dipolar dynamic-scaling function calculated recently by mode-coupling theory based on the Lorentzian approximation. The predicted longitudinal line shape near T(c) disagrees with our data.

引用

收藏

页码：8755 / 8758

页数：4

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