Temperature Dependence of the Riedel Singularity

  • S. A. Buckner
  • D. N. Langenberg


The amplitude of the Josephson supercurrent in a superconducting tunnel junction is voltage (or frequency) dependent. Riedel1 has shown theoretically that within the simple BCS model the amplitude diverges logarithmically at a voltage V = 2Δ/e(Δ is the BCS gap parameter). In practice, however, this Riedel singularity in the supercurrent amplitude is rounded off by quasiparticle damping2,3 and gap anisotropy effects.4 It thus provides an experimental probe of these effects.


Superconducting Tunnel Junction Residual Resistivity Ratio Tunneling Matrix Element Quasiparticle Tunnel Pair Tunneling 


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  1. 1.
    E. Riedel, Z. Naturforsch. 19a, 1634 (1964).ADSMATHGoogle Scholar
  2. 2.
    D.J. Scalapino and T.M. Wu, Phys. Rev. Lett. 17, 315 (1966).ADSCrossRefGoogle Scholar
  3. 3.
    T.M. Wu, Ph. D. Thesis, University of Pennsylvania, 1966 (unpublished).Google Scholar
  4. 4.
    S.A. Buckner, T.F. Finnegan, and D.N. Langenberg, Phys. Rev. Lett. 28, 150 (1972).ADSCrossRefGoogle Scholar
  5. 5.
    N.R. Werthamer, Phys. Rev. 147, 255 (1966).Google Scholar
  6. 6.
    C.A. Hamilton and S. Shapiro, Phys. Rev. Lett. 26, 426 (1971).ADSCrossRefGoogle Scholar
  7. 7.
    C.A. Hamilton, Phys. Rev. B 5, 912 (1972).Google Scholar
  8. 8.
    D. J. Scalapino and B. N. Taylor (unpublished).Google Scholar
  9. 9.
    A.J. Bennett, Phys. Rev. 153, 482 (1967).Google Scholar
  10. 10.
    J.R. Clem. Ann. Phys. (New York) 40, 268 (1966).Google Scholar

Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • S. A. Buckner
    • 1
  • D. N. Langenberg
    • 1
  1. 1.Department of Physics and Laboratory for Research on the Structure of MatterUniversity of PennsylvaniaPhiladelphiaUSA

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