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

Journal Article (Journal Article)

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; this behavior can be interpreted using a finite-dimensional asymptotic model in which the front (charge monopole) positions and the electrical current are the only dynamical variables.

Full Text

Duke Authors

Cited Authors

  • Cantalapiedra, IR; Bergmann, MJ; Bonilla, LL; Teitsworth, SW

Published Date

  • May 2001

Published In

Volume / Issue

  • 63 / 5 Pt 2

Start / End Page

  • 056216 -

PubMed ID

  • 11414999

Electronic International Standard Serial Number (EISSN)

  • 1550-2376

International Standard Serial Number (ISSN)

  • 1539-3755

Digital Object Identifier (DOI)

  • 10.1103/physreve.63.056216


  • eng