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Anomalous Josephson effect in p-wave dirty junctions

Yasuhiro Asano·Yukio Tanaka·Satoshi Kashiwaya
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Abstract

The Josephson effect in p-wave superconductor / diffusive normal metal / p-wave superconductor junctions is studied theoretically. Amplitudes of Josephson currents are several orders of magnitude larger than those in s-wave junctions. Current-phase (J-ϕ) relations in low temperatures are close to those in ballistic junctions such as J\propto\sin(ϕ/2) and J\proptoϕeven in the presence of random impurity potentials. A cooperative effect between the midgap Andreev resonant states and the proximity effect causes such anomalous properties and is a character of the spin-triplet superconductor junctions.

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Yasuhiro Asano, Yukio Tanaka, Satoshi Kashiwaya. 2006-07-26. Anomalous Josephson effect in p-wave dirty junctions. https://doi.org/10.1103/physrevlett.96.097007

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