Nonlinear amplification and mixing of spin waves in a microstrip geometry with metallic ferromagnets
Nonlinear amplification and mixing of spin waves in a microstrip geometry with metallic ferromagnets
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DOI：
10.1063/1.3541787
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发表时间：
2011-01-24
影响因子：
4
通讯作者：
Celinski, Z.
中科院分区：
文献类型：
--
作者：
Khivintsev, Yuri;Marsh, J.;Celinski, Z.
本文研究了超小波导中磁极化激元模的非线性混频和放大。超小波导的几何形状可以产生大的振荡微波场高达约500 Oe。使用这些大的领域，我们研究非线性铁磁动力学的坡莫合金和Fe带。特别是，如果两个不同频率的微波信号被发送到波导中，我们可以通过向另一个波添加能量来增加一个波的传输。我们还演示了新频率的创建和等间隔频率的梳的发展。用微扰理论和微磁学计算解释了这些实验结果。(C)2011年美国物理学会。[doi：10.1063/1.3541787]
We explore the nonlinear mixing and amplification of magnetic polariton modes in ultrasmall waveguides. Ultrasmall waveguide geometries can produce large oscillating microwave fields-up to about 500 Oe. Using these large fields, we examine nonlinear ferromagnetic dynamics in ribbons of Permalloy and Fe. In particular if two microwave signals at different frequencies are sent into the waveguide, we can increase the transmission of one wave by adding energy to the other wave. We also demonstrate the creation of new frequencies and the development of a comb of equally spaced frequencies. These experimental results are explained with perturbation theory and micromagnetics calculations. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3541787]