Experimental observation and interpretation of magnetic polariton modes in FeF2

被引：19

作者：

Jensen, MRF ^{[1
]}

Feiven, SA ^{[1
]}

Parker, TJ ^{[1
]}

Camley, RE ^{[1
]}

机构：

[1] UNIV COLORADO,DEPT PHYS,COLORADO SPRINGS,CO 80933

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 34期

关键词：

D O I：

10.1088/0953-8984/9/34/013

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We demonstrate how the interpretation of high-resolution far-infrared reflectivity and ATR spectra allows the mapping out of experimentally determined dispersion curves for the antiferromagnet FeF2. The dispersion curves clearly summarize the relationship between frequency and wave vector of magnetic polaritons, and show the position of the bulk and surface modes and surface resonances in zero, low and relatively strong applied fields, Surface resonances which exist only in the presence of damping are identified. In addition we show how far-infrared measurements can provide independent measurements of material parameters such as the exchange and anisotropy fields and the sublattice magnetization.

引用

页码：7233 / 7247

页数：15

共 21 条

[1] Theory of far infrared properties of magnetic surfaces, films and superlattices [J].