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Anomalous Josephson Effect in p-Wave Dirty Junctions

Yasuhiro Asano, Yukio Tanaka, Satoshi Kashiwaya

DOI 10.1103/PhysRevLett.96.097007 · Physical Review Letters

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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∝sin(φ/2) and J∝φ even 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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