Nonlinear Properties of the BCS Gap Equation

  • M. P. Sörensen
  • T. Schneider
  • M. Frick
Part of the NATO ASI Series book series (NSSB, volume 264)


The iterative solution of the BCS gap equation defines a nonlinear map, which can be studied with the tools developed for nonlinear dynamics. We demonstrate the usefulness of this approach in determining the phase diagram in the superconducting state, in the presence of a non-trivial pairing interaction, having mixed s and d-wave symmetry.


Gibbs Free Energy Bifurcation Diagram Pairing Interaction Superconducting State Pitchfork Bifurcation 
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Copyright information

© Plenum Press, New York 1991

Authors and Affiliations

  • M. P. Sörensen
    • 1
  • T. Schneider
    • 1
  • M. Frick
    • 1
  1. 1.IBM Research DivisionIBM Research LaboratoryRüschlikonSwitzerland

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