Journal
APPLIED PHYSICS LETTERS
Volume 111, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4995991
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Funding
- Engineering and Physical Sciences Research Council (EPSRC) of the United Kingdom [EP/L019876/1, EP/L020696, EP/P505526/1]
- EPSRC [EP/L020696/1, EP/L019876/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L019876/1, EP/L020696/1] Funding Source: researchfish
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We have used time-resolved scanning Kerr microscopy and micromagnetic simulations to demonstrate that, when driven by the 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. Published by AIP Publishing.
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