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Spin-wave chaotic transients : 38th Annual Conference on Magnetism and Magnetic Materials (1994)

de Aguiar, F. M. ; Rezende, S. M. ; da Silva, F. C. S.

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 75 (1994), S. 5616-5618

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: We report the observation of transient chaotic spin-wave auto-oscillations in X-band pulsed subsidiary-resonance experiments in a YIG sphere. Chaotic transients to a periodic attractor have been observed near a critical microwave power pc∼10 dB relative to the Suhl instability threshold. By an averaging of 100 randomly chosen initial conditions at each power, we estimate a critical exponent γ ∼ 0.57. In addition, we demonstrate that the results can be qualitatively understood within the framework of the standard two-mode model. Numerical simulations yield, for a particular set of parameters, chaotic transients obeying the predicted scaling law with a critical exponent γ ∼ 0.54.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.355659

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