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

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

2004-09-16

arxiv.org/abs/cond-mat/0409411v1

Phys. Rev. B 69, 024516 (2004)

Physics

Condensed Matter

Superconductivity

6 pages, 8 Figures, Latex File

Scientific paper

10.1103/PhysRevB.69.024516

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 $\phi =\pi ,$ 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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