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

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2009
Major/Subject
Mcode
Degree programme
Language
en
Pages
144520/1-5
Series
Physical Review B, Volume 80, Issue 14
Abstract
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 ∼200 pH 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.
Description
Keywords
Josephson effect, tunnel junctions, superconducting Cooper pair transistors
Other note
Citation
Paila, A. & Gunnarsson, D. & Sarkar, J. & Sillanpää, Mika A. & Hakonen, P. J. 2009. Current-phase relation and Josephson inductance in a superconducting Cooper-pair transistor. Physical Review B. Volume 80, Issue 14. 144520/1-5. ISSN 1098-0121 (printed). DOI: 10.1103/physrevb.80.144520.