Quantized spin excitations in a ferromagnetic microstrip from microwave photovoltage measurements

被引：58

作者：

Gui, Y. S. ^{[1
]}

Mecking, N. ^{[1
]}

Hu, C.-M. ^{[1
]}

机构：

[1] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.98.217603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantized spin excitations in a single ferromagnetic microstrip have been measured using the microwave photovoltage technique. Several kinds of spin wave modes due to different contributions of the dipole-dipole and the exchange interactions are observed. Among them are a series of distinct dipole-exchange spin wave modes, which allow us to determine precisely the subtle spin boundary condition. A comprehensive picture for quantized spin excitations in a ferromagnet with finite size is thereby established. The dispersions of the quantized spin wave modes have two different branches separated by the saturation magnetization.

引用

页数：4

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