Theory of dipole-exchange spin waves in ultrathin antiferromagnetic films

被引：4

作者：

Pereira, JM ^{[1
]}

Cottam, MG ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada

来源：

JOURNAL OF APPLIED PHYSICS | 1999年 / 85卷 / 08期

关键词：

D O I：

10.1063/1.370055

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A spin wave theory is developed for ultrathin antiferromagnetic films in the regime where the effects of the dipole-dipole and exchange interactions may be comparable. A microscopic model with a Hamiltonian representation of the above terms is employed, giving a description of linear spin waves in lowest order and the dominant spin wave interactions as higher-order effects. Applications are made to rutile-structure antiferromagnets (such as MnF2), perovskite-structure antiferromagnets (such as RbMnF3), and layered antiferromagnets (such as K2NiF4), which exhibit quite different behavior. (C) 1999 American Institute of Physics. [S0021-8979(99)39608-0].

引用

页码：4949 / 4951

页数：3

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