Chaos in charge density wave systems

  • A. Zettl
  • M. Sherwin
  • R.P. Hall
IV. Charge Density Wave Transport
Part of the Lecture Notes in Physics book series (LNP, volume 217)


We investigate chaotic response in the charge density wave (CDW) condensates of (TaSe4)2I and NbSe3. In (TaSe4)2I, non bifurcative routes to chaos occur when the pinned CDW is excited by an external ac electric field. The behavior is interpreted as that of a driven enharmonic oscillator. In NbSe3 in the switching regime, a period doubling route to chaos occurs for combined ac + do fields. The route to chaos is characteristic of instabilities in phase lock for systems of competing periodicities. Intermittent chaos is also observed in do biased NbSe3 with negative differential resistance. We interpret the chaotic behavior in terms of simple models with restricted numbers of degrees of freedom, and return maps appropriate to these models.


Charge Density Wave Anharmonic Oscillator Broadband Noise Phase Lock Chaotic Response 
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Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • A. Zettl
    • 1
  • M. Sherwin
    • 1
  • R.P. Hall
    • 1
  1. 1.Department of PhysicsUniversity of California BerkeleyBerkeleyUSA

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