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Unstable Behaviour of a Superconducting Ring Containing a Josephson Junction

  • A. Extremera
Part of the NATO ASI Series book series (NSSB, volume 218)

Abstract

The dynamic decay process for a SQUID ring is analyzed within the framework of the flux mode regime. Under the equilibrium flux condition, the quantum rates for the low-lying states are computed by using a simpler form for the Anderson-Josephson potential This condensed matter model has acquired some fame since it describes collective quantum effects in thin magnetic films1 and sine-Gordon systems2. Functional integral techniques specifically adapted to the general features of superconductivity3 are used to derive WKB-type expansions. Hence, the probability in the dual charge (“momentum”) mode is easily obtained.

Keywords

Path Integral JOSEPHSON Junction Flux Condition Quantum Tunnelling Magnetic Film 
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.

References

  1. 1.
    A. O. Caldeira and K. Furuya, Quantum nucleation of magnetic bubbles in a two-dimensional anisotropic Heisenberg model, J. Phys. C21:1227 (1988).ADSGoogle Scholar
  2. 2.
    K. Furuya and A. O. Caldeira, Quantum tunnelling in a double sine-Gordon system near the instability, Physica A154:289 (1989).ADSGoogle Scholar
  3. 3.
    A. Tagliacozzo and F. Ventriglia, Ordinary superconductivity and path integrals, Nuovo Cimento D11:141 (1989).ADSCrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • A. Extremera
    • 1
  1. 1.Departamento de Física ModernaUniversidad de GranadaGranadaSpain

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