Skip to Main content Skip to Navigation
Journal articles

Subgap structure in the conductance of a three-terminal Josephson junction

Andreas Pfeffer 1 Jean Eudes Duvauchelle 1 Hervé Courtois 2 Régis Mélin 3 Denis Feinberg 3 Francois Lefloch 1, *
* Corresponding author
1 LaTEQS - Laboratoire de Transport Electronique Quantique et Supraconductivité
PHELIQS - PHotonique, ELectronique et Ingénierie QuantiqueS : DRF/IRIG/PHELIQS
3 ThQC [2007-2015] - Théorie Quantique des Circuits [2007-2015]
NEEL [2007-2015] - Institut Néel [2007-2015]
Abstract : Three-terminal superconductor (S)-normalmetal (N)-superconductor (S) Josephson junctions are investigated. In a geometry where a T-shape normal metal is connected to three superconducting reservoirs, new subgap structures appear in the differential resistance for specific combinations of the superconductor chemical potentials. Those correspond to a correlated motion of Cooper pairs within the device that persist well above the Thouless energy and is consistent with the prediction of quartets formed by two entangled Cooper pairs. A simplified nonequilibrium Keldysh-Green's function calculation is presented that supports this interpretation.
Complete list of metadatas

Cited literature [32 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/cea-01054613
Contributor : François Lefloch <>
Submitted on : Thursday, August 7, 2014 - 3:42:13 PM
Last modification on : Wednesday, September 30, 2020 - 9:14:02 AM
Long-term archiving on: : Tuesday, April 11, 2017 - 7:22:08 PM

File

PhysRevB.90.075401.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Andreas Pfeffer, Jean Eudes Duvauchelle, Hervé Courtois, Régis Mélin, Denis Feinberg, et al.. Subgap structure in the conductance of a three-terminal Josephson junction. Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2014, 90 (7), pp.075401. ⟨10.1103/PhysRevB.90.075401⟩. ⟨cea-01054613⟩

Share

Metrics

Record views

661

Files downloads

948