Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 26, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3279138
Keywords
Brillouin spectra; crystal microstructure; energy gap; Permalloy; photonic crystals; spin waves; waveguides
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Funding
- DFG [SE 1771/1-1]
- Australian Research Council
- University of Western Australia
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Transmission of microwave spin waves through a microstructured magnonic crystal in the form of a Permalloy waveguide of a periodically varying width was studied experimentally and theoretically. The spin wave characteristics were measured by spatially resolved Brillouin light scattering microscopy. A rejection frequency band was clearly observed. The band gap frequency was controlled by the applied magnetic field. The measured spin-wave intensity as a function of frequency and propagation distance is in good agreement with a model calculation.
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