LONG-RANGE JOSEPHSON EFFECT IN MESOSCOPIC T-SHAPED SUPERCONDUCTOR-NORMAL-METAL-SUPERCONDUCTOR JUNCTIONS

It is found that the de Josephson current in a ballistic superconducto r-normal-metal-superconductor junction connected to an electron reserv oir does not decay with the length of the junction if voltage is appli ed between the reservoir and the junction. At finite temperature, this nonequilibrium Josephson current is proportional to the applied volta ge and saturates at eV>Delta at a level typical for the critical curre nt of short junctions. In asymmetric junctions the current-phase depen dence is pi periodic.