INDIRECT IMPURITY AND HOST MODE EXCITATION VIA FAR-INFRARED LEVEL-CROSSING SPECTROSCOPY IN ANTIFERROMAGNETS

被引：7

作者：

DONNELLY, D ^{[1
]}

HONE, D ^{[1
]}

JACCARINO, V ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,CTR FREE ELECTRON LASER STUDIES,SANTA BARBARA,CA 93106

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.65.2286

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Through the field dependence of its linewidth, the s0 local mode at 83 cm-1 associated with a V2+ impurity in FeF2 is used as a novel probe of impurity shell modes, host magnon density of states, and the phonon mixing of the magnon branches at the magnonacoustic-phonon level crossings. This is the first observation of individual shell modes. Sz-nonconserving and direct exchange interactions contribute to the s0-local-mode relaxation. The method has general applicability to antiferromagnets. © 1990 The American Physical Society.

引用

页码：2286 / 2289

页数：4

共 29 条

[21] FAR-INFRARED LASER STUDY OF MAGNETIC POLARITONS IN FEF2 AND MN IMPURITY MODE IN FEF2-MN
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