Journal of Low Temperature Physics

, Volume 106, Issue 3–4, pp 193–200 | Cite as

Experimental study of fluxon dynamics in a potential well

  • Alexey V. Ustinov
  • Norbert Thyssen
Weak Link Properties I


Dynamics of a single fluxon in an annular Josephson junction is studied in the presence of an externally applied magnetic field H. Due to the interaction of the fluxon with the radial field component, the fluxon moves in a potential well which height is proportional to H. Several spectacular features of fluxon dynamics analogous to the motion of a particle in a washboard potential are clearly observed experimentally. Periodic revolutions of the fluxon in the junction lead to a potential induced emission of plasma waves. These waves are indicated by a resonance at a certain fluxon velocity which depends on the junction length. Good agreement between experiment, theoretical model and numerical simulations is found.

PACS numbers

74.50.+r 03.40.Kf 


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Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • Alexey V. Ustinov
    • 1
  • Norbert Thyssen
    • 1
  1. 1.Institute of Thin Film and Ion TechnologyResearch Center (KFA)JülichGermany

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