Nonlinear Phenomena in Complex Systems, 2004, Vol.7, No.1, pp.52-60

NONLINEAR PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal

2004, Vol.7, No.1, pp.52-60

Spatio-Temporal Chaotic Dynamics in Millimetre-Wave Gunn Devices
V. Shalatonin, V. Mishchenko, and D. Kisel

A drift-diffusion Gunn effect model is used to analyse complex behaviour of natural Gunn oscillation in the periodically driven GaAs Gunn-effect structure. The results of the numerical simulation are presented. It was shown that the Gunn devices might exhibit quite complicated behaviour, characterized by low-dimensional strange chaotic attractor having the correlation dimension less than 2 and positive first Lyapunov exponent.
Key words: Gunn device, fractal chaotic dynamics, long transient behaviour, correlation dimension, Lyapunov exponent

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