Simulations of noise-free stochastic resonance in spin-wave chaos

Andrzej Krawiecki , E. Reibold , H. Benner , A. Sukiennicki

Abstract

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.
Author Andrzej Krawiecki (FP / PCSD)
Andrzej Krawiecki,,
- Physics of Complex Systems Divison
, E. Reibold
E. Reibold,,
-
, H. Benner
H. Benner,,
-
, A. Sukiennicki
A. Sukiennicki,,
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Journal seriesActa Physica Polonica A, ISSN 0587-4246
Issue year2000
Vol97
No5
Pages975-978
ASJC Classification3100 General Physics and Astronomy
URL http://www.scopus.com/inward/record.url?eid=2-s2.0-0043191947&partnerID=40&md5=7a974d2022b9acec0118934a9309d059
Score (nominal)15
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2000 = 0.348; WoS Impact Factor: 2006 = 0.371 (2) - 2007=0.37 (5)
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