Mode selective parametric excitation of spin waves in a Ni81Fe19 microstripe

被引：34

作者：

Braecher, T. ^{[1
]}

Pirro, P.

Obry, B.

Leven, B.

Serga, A. A.

Hillebrands, B.

机构：

[1] Tech Univ Kaiserslautern, Fachbereich Phys, D-67663 Kaiserslautern, Germany

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 16期

关键词：

Brillouin spectra; eigenvalues and eigenfunctions; iron alloys; magnetic field effects; magnetisation; nickel alloys; spin waves;

D O I：

10.1063/1.3651506

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present the experimental observation of parallel parametric amplification of selected thermal spin-wave modes in a transversally magnetized Ni81Fe19 microstripe. By employing Brillouin light scattering microscopy, we identify the dominant group, i.e., the spin-wave mode that is preferentially amplified. Due to the existing spin-wave quantization in the system, it is possible to select one specific mode to be parametrically excited by changing the bias magnetic field. This gives access to transversal spin-wave eigenmodes of the stripe which are promising for spin-wave information processing and also to modes localized at the stripe edges. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3651506]

引用

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