Excitation of microwaveguide modes by a stripe antenna

被引：184

作者：

Demidov, Vladislav E. ^{[1
,2
]}

Kostylev, Mikhail P. ^{[3
]}

Rott, Karsten ^{[4
]}

Krzysteczko, Patryk ^{[4
]}

Reiss, Guenter ^{[4
]}

Demokritov, Sergej O. ^{[1
,2
]}

机构：

[1] Univ Munster, Inst Appl Phys, D-48149 Munster, Germany

[2] Univ Munster, Ctr Nonlinear Sci, D-48149 Munster, Germany

[3] Univ Western Australia, Sch Phys, Crawley, WA 6009, Australia

[4] Univ Bielefeld, Dept Phys, D-33501 Bielefeld, Germany

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 11期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1063/1.3231875

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied experimentally the excitation of propagating spin-wave modes of a microscopic Permalloy-film waveguide by a stripe antenna. We show that due to the strong quantization of the spin-wave spectrum, the excitation of particular modes has essentially different frequency dependencies leading to a nonmonotonous variation of the modulation depth of the resulting spin-wave beam as a function of the excitation frequency. In addition, we address the effect of nonreciprocity of spin-wave excitation and found that for the case of Permalloy microwaveguides this effect is much weaker pronounced than for waveguides made from dielectric magnetic films with low saturation magnetization. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3231875]

引用

页数：3

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