Nonsinusoidal current-phase relation in SFS Josephson junctions

Josephson junctions with tunable current-phase relation

A. Lipman,1 R. G. Mints,1 R. Kleiner,2 D. Koelle,2 and E. Goldobin2,* 1The Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel 2Physikalisches Institut and Center for Collective Quantum Phenomena in LISA+, Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany (Received 29 September 2014; revised manuscript received 22 Octob...

Mesoscopic Josephson junctions with switchable current-phase relation

E. Strambini, a) F. S. Bergeret, 3, 4, b) and F. Giazotto c) NEST Istituto Nanoscienze-CNR and Scuola Normale Superiore, I-56127 Pisa, Italy Centro de F́ısica de Materiales (CFM-MPC), Centro Mixto CSIC-UPV/EHU, Manuel de Lardizabal 4, E-20018 San Sebastián, Spain Donostia International Physics Center (DIPC), Manuel de Lardizabal 5, E-20018 San Sebastián, Spain Institut für Physik, Carl von Ossie...

Current-Phase Relation of Ballistic Graphene Josephson Junctions

The current-phase relation (CPR) of a Josephson junction (JJ) determines how the supercurrent evolves with the superconducting phase difference across the junction. Knowledge of the CPR is essential in order to understand the response of a JJ to various external parameters. Despite the rising interest in ultraclean encapsulated graphene JJs, the CPR of such junctions remains unknown. Here, we u...

sin ( 2 φ ) current - phase relation in SFS junctions with deco - herence in the ferromagnet

Phase transition in current-biased arrays of small Josephson junctions

We present a variational approach to treat the metastable superconducting state in an array of small Josephson junctions driven by an applied current. Using this approach, we calculate an approximate phase diagram of such an array with a current bias. Our approach is a generalization of one previously used for such an array at zero applied current. We find that, for a given array, a superconduc...