Tunneling in two-channel Kondo superconducting junctions

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10 Scopus citations


Charge transport in the short weak links (K) between two superconductors (S) or between a normal metal (N) and a superconductor is considered. The electron scattering in the weak link is accomplished by two-level systems acting as two-channel Kondo impurities. The impact of this interaction on conductance in the NKS tunnel structure as well as on the Josephson current in SKS junctions is analyzed. It is shown that the conductance of NKS systems as a function of temperature T has a dip at low temperatures, an effect similar to that in NKN junctions. The critical Josephson current of SKS junctions shows a temperature dependence which deviates from such a dependence of ballistic superconducting contacts.

Original languageEnglish
Pages (from-to)3640-3644
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number5
StatePublished - 1 Jan 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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