期刊
APPLIED PHYSICS LETTERS
卷 99, 期 16, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3651506
关键词
Brillouin spectra; eigenvalues and eigenfunctions; iron alloys; magnetic field effects; magnetisation; nickel alloys; spin waves
资金
- DFG
- OPTIMAS Carl-Zeiss doctoral program
- Carl-Zeiss Foundation
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]
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