Spectra of exchange dipole electromagnetic-spin waves in asymmetric metal-insulator-ferromagnetic-insulator-metal systems

被引：9

作者：

Demidov, VE ^{[1
]}

Kalinikos, BA ^{[1
]}

机构：

[1] St Petersburg State Univ Elect Engn, St Petersburg 197376, Russia

来源：

TECHNICAL PHYSICS | 2001年 / 46卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

Electromagnetic Wave; Layer Structure; Optimal Geometry; Spin Wave; Dispersion Property;

D O I：

10.1134/1.1349280

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spectra of exchange dipole electromagnetic-spin waves in tangentially magnetized asymmetric planar-layer metal-insulator-ferromagnetic-insulator-metal (MIFIM) systems were studied theoretically. It is shown that symmetry breakdown due to a difference in the permittivities of the insulating layers may substantially enhance interaction between the spin and electromagnetic waves. This improves the electrical controllability of the dispersion properties of the spin waves, for example, by varying the permittivity of one of the layers that are in contact with the ferromagnetic film. Optimal geometries of the layer structures that provide the best electrical control are suggested. (C) 2001 MAIK "Nauka/Interperiodica".

引用

页码：219 / 222

页数：4