On-off intermittency in a high-dimensional model of randomly driven parallel pumping

Andrzej Krawiecki , A. Sukiennicki


A model of parallel pumping with many interacting parametric spin-wave pairs is investigated numerically. Two ways of obtaining on-off intermittency in the time series of absorption are discussed: random or chaotic modulation of the rf field amplitude or of the dc field, slow in comparison with the rf field frequency. If the possibility of thermal excitation of spin waves is neglected, only one spin-wave pair is excited above the intermittency threshold and exhibits bursts. In the opposite case, a phenomenon of widening of the phase space in the presence of thermal noise is observed: a packet of parametric spin waves is excited with frequencies close to half the pumping frequency. This modifies quantitatively, but not qualitatively the characteristics of on-off intermittency in the presence of thermal noise.
Author Andrzej Krawiecki (FP / PCSD)
Andrzej Krawiecki,,
- Physics of Complex Systems Divison
, A. Sukiennicki
A. Sukiennicki,,
Journal seriesChaos Solitons & Fractals, ISSN 0960-0779
Issue year1997
ASJC Classification2600 General Mathematics
URL http://www.sciencedirect.com/science/article/pii/S0960077997000325
Score (nominal)30
Score sourcejournalList
Publication indicators WoS Citations = 1; GS Citations = 2.0; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 0.654; WoS Impact Factor: 2006 = 2.042 (2) - 2007=2.574 (5)
Citation count*2 (2015-04-02)
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