Journal
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Volume 248, Issue 10, Pages 2404-2408Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.201147093
Keywords
Brillouin light scattering microscopy; interference; microstructures; spin waves
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Funding
- Carl-Zeiss-Stiftung
- Deutsche Forschungsgemeinschaft [Graduiertenkolleg 792]
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We present experimental observations of the interference of spin-wave modes propagating in opposite directions in micron-sized Ni81Fe19-waveguides. To monitor the local spin-wave intensity distribution and phase of the formed interference pattern, we use Brillouin light scattering microscopy. The two-dimensional spin-wave intensity map can be understood by considering the interference of several waveguide eigenmodes with different wavevectors quantized across the width of the stripe. The phase shows a transition from linear dependence on the space coordinate near the antennas characteristic for propagating waves to discrete values in the center region characteristic for standing waves. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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