Resonant Josephson current

B. Laikhtman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

It is shown that the resonant Josephson current where both electrons of a Cooper pair tunnel resonantly cannot take place with just one intermediate localized state. A true resonance is possible only if two electrons of & Cooper pair tunnel through two different localized states in the junction with energies close to different edges of the superconducting gap. The tunneling amplitude is not described by the Breit-Wigner formula and its value is strongly affected by the singularity of the density of states in superconductors. This amplitude and the critical current are calculated.

Original languageEnglish
Pages (from-to)651-656
Number of pages6
JournalEurophysics Letters
Volume39
Issue number6
DOIs
StatePublished - 15 Sep 1997

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