RAMAN-SCATTERING FROM MAGNONS IN COCL2 AND FECL2

被引：19

作者：

LOCKWOOD, DJ

JOHNSTONE, IW

MISCHLER, G

CARRARA, P

机构：

[1] UNIV NOTTINGHAM,DEPT PHYS,NOTTINGHAM NG7 2RD,ENGLAND

[2] CNRS,PHYS SOLIDES LAB,F-31077 TOULOUSE,FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1978年 / 25卷 / 08期

关键词：

D O I：

10.1016/0038-1098(78)91490-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

One-magnon Raman scattering has been observed in the metamagnets CoCl2 and FeCl2. The k = 0 magnon energies are 16 ± 1 cm-1 at 21 K and 16.4 ± 0.4 cm-1 at 12 K, respectively and these values are in good agreement with previous AFMR and neutron scattering results. A search for two-magnon scattering in both compounds was unsuccessful, largely because of masking from nearby first-order phonons and a weak temperature dependent broad band at 140 cm-1 in CoCl2, which is assigned to two-phonon scattering from acoustic phonons. © 1978.

引用

页码：565 / 568

页数：4

共 16 条

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