Current-phase relation and Josephson inductance in a superconducting Cooper-pair transistor

A. Paila, D. Gunnarsson, J. Sarkar, M. A. Sillanpää, P. J. Hakonen

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


We have investigated the Josephson inductance LJ of a superconducting Cooper pair transistor (SCPT). We traced the inductance using microwave reflection measurements on a tuned resonance circuit in which a SCPT was mounted in parallel to a □200pH strip line inductance. When the inverse of the Josephson inductance, determined on the charge-phase bias plane for a SCPT with a Josephson to Coulomb energy ratio of EJ / EC =1.75, is integrated over the phase, we obtain a current-phase relation, which is strongly nonsinusoidal near the charge degeneracy point.

Original languageEnglish
Article number144520
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number14
Publication statusPublished - 21 Oct 2009
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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