Universality of the Gunn effect: Self-sustained oscillations mediated by solitary waves

  title={Universality of the Gunn effect: Self-sustained oscillations mediated by solitary waves},
  author={L. Bonilla and I. R. Cantalapiedra},
  journal={Physical Review E},
The Gunn effect consists of time-periodic oscillations of the current flowing through an external purely resistive circuit mediated by solitary wave dynamics of the electric field on an attached appropriate semiconductor. By means of an asymptotic analysis, it is argued that Gunn-like behavior occurs in specific classes of model equations. As an illustration, an example related to the constrained Cahn-Allen equation is analyzed. 

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