Nonstanding spin waves in a single rectangular permalloy microstrip under uniform magnetic excitation
arXiv:2111.07773 · doi:10.1103/PhysRevB.105.094415
Abstract
Ferromagnetic resonance modes in a single rectangular NiFe microstrip were directly imaged using time-resolved scanning transmission x-ray microscopy combined with a phase-locked ferromagnetic resonance excitation scheme and the findings were corroborated by micromagnetic simulations. Although under uniform excitation in a single confined microstructure typically standing spin waves are expected, all imaged spin waves showed a nonstanding character both, at and off resonance, the latter being additionally detected with microantenna-based ferromagnetic resonance. The effect of the edge quality on the spin waves was observed in micromagnetic simulations.
arXiv comment11 pages, 6 figures
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