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Emergence of chaos in magnetic-field-driven skyrmions
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- Authors
- Issue Date
- 2023-11
- Publisher
- American Physical Society
- Citation
- Physical Review B, Vol.108 No.17, p. 174441
- Abstract
- We explore magnetic-field-driven chaos in magnetic skyrmions. Oscillating magnetic fields induce nonlinear dynamics in skyrmions, arising from the coupling of the secondary gyrotropic mode with a nonuniform, breathinglike mode. Through micromagnetic simulations, we observe complex patterns of hypotrochoidal motion in the orbital trajectories of the skyrmions, which are interpreted using bifurcation diagrams and local Lyapunov exponents. Our findings demonstrate that different nonlinear behaviors of skyrmions emerge at distinct temporal stages, depending on the nonlinear dynamic parameters. Investigating the abundant dynamic patterns of skyrmions during the emergence of chaos not only enhances device reliability but also provides useful guidelines for establishing chaos computing based on skyrmion dynamics.
- ISSN
- 2469-9950
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