Excitation of short-wavelength spin waves in magnonic waveguides
- 22 August 2011
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 99 (8), 082507
- https://doi.org/10.1063/1.3631756
Abstract
By using phase-resolved micro-focus Brillouinlight scattering spectroscopy, we demonstrate experimentally a phenomenon of wavelength conversion of spin waves propagating in tapered Permalloy waveguides. We show that this phenomenon enables efficient excitation of spin waves with sub-micrometer wavelengths being much smaller than the width of the microstrip antenna used for the excitation. The proposed excitation mechanism removes restrictions on the spin-wave wavelength imposed by the size of the antenna and enables improvement of performances of integrated magnonic devices.Keywords
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