Effect of a barrier at the superconducting-normal metal interface

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9 Scopus citations


A superconducting-normal metal sandwich, in which there is a potential barrier at the interface, is considered. The Tomasch effect amplitude is shown to be reduced by a factor related to the barrier transmission coefficient. We then derive from first principles the boundary conditions obeyed by the kernel in the Gor'kov gap equation at the interface, within the diffusion approximation. This represents the first ab initio calculation of the "second" de Gennes boundary condition.

Original languageEnglish
Pages (from-to)777-786
Number of pages10
JournalJournal of Low Temperature Physics
Issue number5-6
StatePublished - 1 Jun 1977
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics


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