No abstract

The influence of electron reflection on dc Josephson effect in a ballistic point contact with transport current in the banks is considered theoretically. The effect of finite transparency on the vortex-like currents near the contact and at the phase difference φ = π, which has been predicted recently 1 , is investigated. We show that at low temperatures even a small reflection on the contact destroys the mentioned vortex-like current states, which can be restored by increasing of the temperature.

We study coherent current states in the mesoscopic superconducting weak link simultaneously subjected to the order parameter phase difference φ on the contact and to the tangential to the junction interface superfluid velocity vs in the banks. The Josephson current-phase relation IJ (φ) controlled by the external transport current IT (vs) is obtained. At φ close to π the nonlocal nature of the Josephson phasedependent current results in the appearance of two vortexlike states in the vicinity of the contact.