Effect of point-contact transparency on coherent mixing of Josephson and transport supercurrents
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 KOSh, 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.
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