Anomalous charge transport in triplet superconductor junctions

Y. Tanaka; S. Kashiwaya

doi:10.1103/PhysRevB.70.012507

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Anomalous charge transport in triplet superconductor junctions

Y. Tanaka, S. Kashiwaya

DOI 10.1103/PhysRevB.70.012507 · Physical Review B

T1

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Abstract

Charge transport properties of a diffusive normal metal∕triplet superconductor (DN∕TS) junction are studied based on the Keldysh-Nambu quasiclassical Green’s function formalism. Contrary to the unconventional singlet superconductor junction case, the mid-gap Andreev resonant state at the interface of the TS is shown to enhance the proximity effect in the DN. The total resistance of the DN∕TS junction is drastically reduced and is completely independent of the resistance of the DN in the extreme case. Such anomalous transport accompanies a giant zero-bias peak in the conductance spectra and a zero-energy peak of the local density of states in the DN region. These striking features manifest the presence of novel proximity effect peculiar to triplet superconductor junctions.

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Formula	Reported Tc (K)	Pressure (GPa)	Type
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown