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Sub-Gap Structure in the Conductance of a Three-Terminal Josephson Junction
- Source :
- Physical Review B: Condensed Matter and Materials Physics (1998-2015), Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2014, 90 (7), pp.075401. ⟨10.1103/PhysRevB.90.075401⟩, Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90 (7), pp.075401. ⟨10.1103/PhysRevB.90.075401⟩
- Publication Year :
- 2013
- Publisher :
- arXiv, 2013.
-
Abstract
- Three-terminal superconductor (S) - normal metal (N) - superconductor (S) Josephson junctions are investigated. In a geometry where a T-shape normal metal is connected to three superconducting reservoirs, new sub-gap 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.<br />Comment: To appear in Physical Review B
- Subjects :
- Physics
Josephson effect
Superconductivity
Josephson junctions
Condensed matter physics
Condensed Matter - Mesoscale and Nanoscale Physics
Conductance
Non-equilibrium thermodynamics
FOS: Physical sciences
Function (mathematics)
Condensed Matter Physics
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
74.78.Na, 74.45.+c, 74.50.+r, 85.25.Cp
Electronic, Optical and Magnetic Materials
Andreev reflection
Pi Josephson junction
Condensed Matter::Superconductivity
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Cooper pair
[PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall]
Mesoscopic superconductivity
Subjects
Details
- ISSN :
- 10980121 and 1550235X
- Database :
- OpenAIRE
- Journal :
- Physical Review B: Condensed Matter and Materials Physics (1998-2015), Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2014, 90 (7), pp.075401. ⟨10.1103/PhysRevB.90.075401⟩, Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90 (7), pp.075401. ⟨10.1103/PhysRevB.90.075401⟩
- Accession number :
- edsair.doi.dedup.....ae44058f204aa2aaeb800044c27e08b4
- Full Text :
- https://doi.org/10.48550/arxiv.1307.4862