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Collective Modes of The Superconducting Order Parameter

  • A. M. Goldman
Part of the NATO Advanced Study Institutes Series book series (NSSB, volume 65)

Abstract

A new propagating collective mode with an acoustic dispersion relation was detected in dirty superconductors near Tc by Carlson and Goldman (1973, 1975, 1976). Such a mode was later obtained theoretically in the dirty-limit by Schmid and Schön (1975) and in the clean-limit by Artemenko and Volkov (1975). The possibility of a collective mode in superconductors was first considered shortly after the BCS theory was developed. Bogoliubov (1959) and Anderson (1958) found weakly damped oscillations of the order-parameter phase with an acoustic dispersion relation in the case of an uncharged superconductor, a result consistent with nonrelativistic generalizations of the Goldstone theorem which imply the existence of such a mode as a consequence of the gauge symmetry breaking at the superconducting phase transition (Wagner, 1966).

Keywords

Tunneling Junction Collective Mode Magnetic Impurity Superconducting Order Parameter Paramagnetic Impurity 
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

© Plenum Press, New York 1981

Authors and Affiliations

  • A. M. Goldman
    • 1
  1. 1.School of Physics and AstronomyUniversity of MinnesotaMinneapolisUSA

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