Zeitschrift für Physik B Condensed Matter

, Volume 66, Issue 4, pp 515–521 | Cite as

Spontaneous resistance oscillations inp-germanium at low temperatures and their spatial correlation

  • B. Röhricht
  • J. Parisi
  • J. Peinke
  • R. P. Huebener
Article
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Abstract

Spontaneous oscillations and chaotic behavior of the electric resistance can be observed inp-doped germanium during avalanche breakdown at liquid-He temperatures. By a series of different ohmic contacts attached to the specimen surface, the spatial coupling between the resistance oscillations in different sections of the same single-crystalline Ge sample can be studied. Using a geometry where coupling via charge carriers can be ignored, we have investigated the case where the lattice heat conductivity of the Ge crystal represents the dominant coupling mechanism. If two coupled sample sections were operated in the post-breakdown regime, a distinct phase shift developed between the current oscillations in both sections eventually reaching exact phase reversal. These results show a striking similarity to the dynamics of a coupled Rashevsky-Turing reaction-diffusion system.

Keywords

Germanium Ohmic Contact Chaotic Behavior Striking Similarity Current Oscillation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • B. Röhricht
    • 1
  • J. Parisi
    • 1
  • J. Peinke
    • 1
  • R. P. Huebener
    • 1
  1. 1.Physikalisches Institut IIUniversität TübingenTübingenFederal Republic of Germany

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