THEORY OF SURFACE AND BULK EXCITATIONS IN FERROMAGNETIC SEMICONDUCTORS

被引：34
|
作者：
GOPALAN, S
COTTAM, MG
机构：
[1] Department of Physics, University of Western Ontario, London
来源：
PHYSICAL REVIEW B | 1990年 / 42卷 / 16期
关键词：
D O I：
10.1103/PhysRevB.42.10311
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The s-d (or s-f) interaction model is used to study the bulk and surface magnetic excitations of a semi-infinite ferromagnetic semiconductor. A formalism is established to obtain Green functions which provide the dynamic response of the system and from which the surface and bulk excitations and their dispersion relations are calculated. Results are deduced for both narrow-band and wide-band ferromagnetic semiconductors. The applicability to particular materials, such as the spinel-type ferromagnetic semiconductors is discussed. © 1990 The American Physical Society.
引用
收藏
页码：10311 / 10318
页数：8
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