# Chaotic motion of space charge wave fronts in semiconductors under time-independent voltage bias.

@article{Cantalapiedra2001ChaoticMO, title={Chaotic motion of space charge wave fronts in semiconductors under time-independent voltage bias.}, author={I. R. Cantalapiedra and M. Bergmann and L. Bonilla and S. Teitsworth}, journal={Physical review. E, Statistical, nonlinear, and soft matter physics}, year={2001}, volume={63 5 Pt 2}, pages={ 056216 } }

A standard drift-diffusion model of space charge wave propagation in semiconductors has been studied numerically and analytically under dc voltage bias. For sufficiently long samples, appropriate contact resistivity, and applied voltage-such that the sample is biased in a regime of negative differential resistance-we find chaos in the propagation of nonlinear fronts (charge monopoles of alternating sign) of electric field. The chaos is always low dimensional, but has a complex spatial structure… Expand

#### 13 Citations

TOPICAL REVIEW: Theory of nonlinear charge transport, wave propagation, and self-oscillations in semiconductor superlattices

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We present a general method for studying front propagation in nonlinear systems with a global constraint in the language of hybrid tank models. The method is illustrated in the case of semiconductor… Expand

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We investigate the wavefronts depinning in current biased, infinitely long semiconductor superlattice systems by the method of discrete mapping and show that the wavefront depinning corresponds to… Expand

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Chaos synchronization has been demonstrated as a useful building block for various tasks in secure communications, including a source of all-electronic ultrafast physical random number generators… Expand

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