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Half-Periodic Josephson Effect in an s-Wave Superconductor - Normal Metal -d-Wave Superconductor Junction

Alexandre M. Zagoskin
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Abstract

We predict that the Josephson current in a clean s-wave superconductor-normal metal-d-wave superconductor junction is periodic in superconducting phase difference $ϕ$ with period $π$ instead of $2π$. The frequency of non-stationary Josephson effect is correspondingly $2ω_J = 4eV.$ The effect is due to coexistence in the normal layer of current carrying Andreev levels with phase differences $ϕ$ and $ϕ+π.$

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Alexandre M. Zagoskin. 1997-05-04. Half-Periodic Josephson Effect in an s-Wave Superconductor - Normal Metal -d-Wave Superconductor Junction. https://doi.org/10.1088/0953-8984%2F9%2F31%2F001

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