Time-resolved photoemission electron microscopy imaging of mode coupling between three interacting magnetic vortices

The interactions between three magnetic vortices in a planar equilateral triangular arrangement were studied by time-resolved photoemission electron microscopy. The gyrotropic resonance frequencies of the three individual vortices in the tri-disk system are different from one another and also shifte...

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Bibliographic Details
Published in:Applied physics letters 2014-09, Vol.105 (10)
Main Authors: Wang, Xiao, Keavney, D. J., Asmat-Uceda, M., Buchanan, K. S., Melikyan, A., Cheng, X. M.
Format: Article
Language:English
Subjects:
Applied physics
Computer simulation
COMPUTERIZED SIMULATION
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COUPLING
ELECTRON MICROSCOPY
INTERACTIONS
MAGNETIC FLUX
Magnetic resonance
Microscopy
Photoelectric emission
PHOTOEMISSION
RESONANCE
TIME RESOLUTION
VORTICES
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Summary:The interactions between three magnetic vortices in a planar equilateral triangular arrangement were studied by time-resolved photoemission electron microscopy. The gyrotropic resonance frequencies of the three individual vortices in the tri-disk system are different from one another and also shifted from that of an isolated vortex by as much as 12%. A comparison with analytical calculations and numerical simulations shows that the observed frequency shifts result from the dipolar interaction between the vortices.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4895070