Magnonic band gaps in waveguides with a periodic variation of the saturation magnetization
arXiv:1305.6619 · doi:10.1103/PhysRevB.88.134406
Abstract
We present a micromagnetic analysis of spin-wave propagation in a magnonic crystal realized as a permalloy spin-wave waveguide with a spatial periodical variation of its saturation magnetization. Frequency band gaps were clearly observed in the spin-wave transmission spectra and their origin is traced back to an overlap of individual band gaps of the fundamental and the higher order spin-wave width modes. The control of the depth, width and the position in frequency and space of the rejection band gaps by the width areas with a reduced magnetization and by the modulation level, are discussed in this study.
5 pages, 4 figures
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