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

G. Rashedi·Yu. A. Kolesnichenko
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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 \cite{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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G. Rashedi, Yu. A. Kolesnichenko. 2004-09-16. Effect of point-contact transparency on coherent mixing of Josephson and transport supercurrents. https://doi.org/10.1103/physrevb.69.024516

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