Quantum limit of the triplet proximity effect in half-metal - superconductor junctions

Simple item page
dc.creatorBéri, B.
dc.creatorKupferschmidt, J. N.
dc.creatorBeenakker, C. W. J.
dc.creatorBrouwer, P. W.
dc.date2008-11-04
dc.date2008-12-22
dc.date.accessioned2026-07-07T12:34:19Z
dc.date.available2026-07-07T12:34:19Z
dc.descriptionWe apply the scattering matrix approach to the triplet proximity effect in superconductor-half metal structures. We find that for junctions that do not mix different orbital modes, the zero bias Andreev conductance vanishes, while the zero bias Josephson current is nonzero. We illustrate this finding on a ballistic half-metal--superconductor (HS) and superconductor -- half-metal -- superconductor (SHS) junction with translation invariance along the interfaces, and on HS and SHS systems where transport through the half-metallic region takes place through a single conducting channel. Our calculations for these physically single mode setups -- single mode point contacts and chaotic quantum dots with single mode contacts -- illustrate the main strength of the scattering matrix approach: it allows for studying systems in the quantum mechanical limit, which is inaccessible for quasiclassical Green's function methods, the main theoretical tool in previous works on the triplet proximity effect.
dc.description12 pages, 10 figures; v2: references added, typos corrected
dc.identifierhttps://arxiv.org/abs/0811.0559
dc.identifierhttp://arxiv.org/abs/0811.0559
dc.identifierPhys.Rev.B 79, 024517 (2009)
dc.identifierdoi:10.1103/PhysRevB.79.024517
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217389
dc.subjectSuperconductivity
dc.titleQuantum limit of the triplet proximity effect in half-metal - superconductor junctions
dc.typetext

Files

Collections

arXiv