Absence of split pairs in the cross-correlations of a highly transparent normal metal-superconductor-normal metal electron beam splitter - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2013

Absence of split pairs in the cross-correlations of a highly transparent normal metal-superconductor-normal metal electron beam splitter

Résumé

The nonlocal conductance and the current cross-correlations are investigated within scattering theory for three-terminal normal metal-superconductor-normal metal (NSN) hybrid structures. The positive cross-correlations at high transparency found by Mélin, Benjamin and Martin [Phys. Rev. B 77, 094512 (2008)] are not due to crossed Andreev reflection. On the other hand, local processes can be enhanced by reflectionless tunneling but this mechanism has little influence on nonlocal processes and on current cross-correlations. Therefore Cooper pair splitting cannot be enhanced by reflectionless tunneling. Overall, this shows that NSN structures with highly transparent or effectively highly transparent interfaces are not suited to experimentally producing entangled split pairs of electrons.
Fichier principal
Vignette du fichier
1309.7159.pdf (267.2 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00868479 , version 1 (13-01-2022)

Identifiants

Citer

Martina Flöser, Denis Feinberg, Régis Mélin. Absence of split pairs in the cross-correlations of a highly transparent normal metal-superconductor-normal metal electron beam splitter. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2013, 88 (9), pp.094517. ⟨10.1103/PhysRevB.88.094517⟩. ⟨hal-00868479⟩

Collections

UGA CNRS NEEL
78 Consultations
28 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More