Broadband conversion of microwaves into propagating spin waves in patterned magnetic structures
arXiv:1706.04409 · doi:10.1063/1.4995991
Abstract
We have used time-resolved scanning Kerr microscopy (TRSKM) and micromagnetic simulations to demonstrate that, when driven by spatially uniform microwave field, the edges of patterned magnetic samples represent both efficient and highly tunable sources of propagating spin waves. The excitation is due to the local enhancement of the resonance frequency induced by the non-uniform dynamic demagnetizing field generated by precessing magnetization aligned with the edges. Our findings represent a crucial step forward in the design of nanoscale spin-wave sources for magnonic architectures, and are also highly relevant to the understanding and interpretation of magnetization dynamics driven by spatially-uniform magnetic fields in patterned magnetic samples.
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Cited by in corpus (8)
- Coherent excitation of heterosymmetric spin waves with ultrashort wavelengths
- Real space observation of magnon interaction with driven space-time crystals
- Spin Dynamics in van der Waals Magnetic Systems
- Mapping the magnonic landscape in patterned magnetic structures
- Local non-linear excitation of sub-100 nm bulk-type spin waves by edge-localized spin waves in magnetic films
- Dynamics of Spiral Spin Waves in Magnetic Nano-patches: Influence of Thickness and Shape
- Time-domain imaging of curling modes in a confined magnetic vortex and a micromagnetic study exploring the role of spiral spin waves emitted by the core
- Hippopede curves for modelling radial spin waves in an azimuthal graded magnonic landscape