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Josephson current through charge density waves

M. I. Visscher·B. Rejaei
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Abstract

The effect of the collective charge density wave (CDW) motion on the Josephson current in a superconductor/charge density wave/superconductor junction is studied theoretically. By deriving the kinetic equations for the coupled superconductor-CDW system, it is shown that below the critical current the CDW does not move. Biased above this value, the Josephson current oscillates as a function of the velocity of the sliding CDW and the collective mode acts as a non-linear shunting resistor parallel to the Josephson channel. The effects of impurity pinning are accounted for at a phenomenological level.

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M. I. Visscher, B. Rejaei. 1997-07-21. Josephson current through charge density waves. https://doi.org/10.1103/physrevlett.79.4461

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