Simulations of Noise-Free Stochastic Resonance in Spin-Wave Chaos

• Authors: A. Krawiecki , E. Reibold , H. Benner , A. Sukiennicki
• Languages of publication: EN

Abstracts

EN

Numerical simulations of noise-free stochastic resonance and aperiodic stochastic resonance in chaotic ferromagnetic resonance are presented. The model, based on three-magnon interactions between the externally excited uniform mode and pairs of spin waves, shows on-off intermittency. The rf magnetic field amplitude is slowly modulated by a small periodic or aperiodic signal, and the output signal, which reflects the occurrence of laminar phases and bursts in the time series of spin-wave amplitudes, is analyzed. On variation of the dc magnetic field the signal-to-noise ratio of the output signal and the correlation function between modulation and output signal pass a maximum, which indicates the occurrence of periodic and aperiodic stochastic resonance, respectively. The role of thermal magnon excitations in the occurrence of this maximum is clarified. The results are compared with experimental findings obtained in other types of intermittency.

Keywords

EN

76.50.+g; 75.30.Ds; 05.45.+b; 05.40.+j

Discipline

• 75.30.Ds: Spin waves(for spin-wave resonance, see 76.50.+g)
• 76.50.+g: Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance(see also 75.30.Ds Spin waves)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 5
• Pages: 975-978

Dates

published

2000-05

Contributors

author

A. Krawiecki

• Institute of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland

author

E. Reibold

• Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstraße 6, 64289 Darmstadt, Germany

author

H. Benner

• Institut für Festkörperphysik, Technische Universität Darmstadt, Hochschulstraße 6, 64289 Darmstadt, Germany

author

A. Sukiennicki

• Institute of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
• Department of Solid State Physics, University of Łódź, Pomorska 149/153, 90-283 Łódź, Poland
• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

Identifiers

DOI

10.12693/APhysPolA.97.975