SURFACE-POLARITONS ON ANTIFERROMAGNETIC SUPERLATTICES

被引：41

作者：

ALMEIDA, NS ^{[1
]}

TILLEY, DR ^{[1
]}

机构：

[1] UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 73卷 / 01期

关键词：

Magnetic Materials - Antiferromagnetism;

D O I：

10.1016/0038-1098(90)90007-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effective-medium theory of magnetic superlattices is applied to uniaxial antiferromagnets without an external field. The effective magnetic permeability tensor is then diagonal but anisotropic. a surface polariton exists on a semi-infinite antiferromagnet/non-magnet superlattice; it has a magnetostatic limit if f1> 1 2, where f1 is the proportion of antiferromagnet, but is a virtual mode qithout a magnetostatic limit of f1 < 1 2. Calculations of attenuated-total-reflection spectra for the FeF2/ZnF2 system indicate that the surface polariton should be observable by this means. © 1990.

引用

页码：23 / 27

页数：5

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