Eur. Phys. J. B (2013) 86: 294
https://doi.org/10.1140/epjb/e2013-40095-2

Regular Article

Current-phase relation of double-barrier Josephson junctions with a two-gap superconductor as intermediate electrode

Dipartimento di Fisica “E. R. Caianiello” University of Salerno, 84084 Fisciano, Italy

^a e-mail: rdeluca@unisa.it

Received: 5 February 2013
Received in final form: 16 April 2013
Published online: 26 June 2013

Abstract

The current-phase (I-ϕ) relation of a double-barrier Josephson junction with a two-gap superconductor as intermediate electrode is derived by means of a simplified version of Ohta’s model. As in conventional double-barrier Josephson junctions, a marked skewness in the I-ϕ curves is present. Moreover, as in heterotic Josephson devices, a reduction of the maximum Josephson current is predicted. An appropriate experiment to verify the rich behavior of this type of Josephson device is suggested.