Andreev Scattering and the Kondo Effect

Abstract

We examine the properties of an infinite-$U$ Anderson impurity coupled to both normal and superconducting metals. Both the cases of a quantum dot and a quantum point contact containing an impurity are considered; for the latter, we study both one and two-channel impurities. Using a generalization of the noncrossing approximation which incorporates multiple Andreev reflection, we compute the impurity spectral function and the linear-response conductance of these devices. We find generically that the Kondo resonance develops structure at energies corresponding to the superconducting gap, and that the magnitude of the resonance at the Fermi energy is altered. This leads to observable changes in the zero-bias conductance as compared to the case with no superconductivity.

8 pages, 7 figures; expanded version to appear in PRB

Cited by in corpus (68)

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• Josephson Current through a correlated quantum level: Andreev states and Pi-junction behavior
• Kondo effect in Normal-Superconductor Quantum Dots
• Superconducting proximity effect in interacting double-dot systems
• Loss of Pi-Junction Behaviour in an Interacting Impurity Josephson Junction
• Real-time diagrammatic approach to transport through interacting quantum dots with normal and superconducting leads
• Excess Kondo resonance in a quantum dot device with normal and superconducting leads: the physics of Andreev-normal co-tunneling
• Numerical Renormalization Group Approach to a Quantum Dot Coupled to Normal and Superconducting Leads
• Kondo effect in coupled quantum dots: a Non-crossing approximation study
• Interplay of Kondo and superconducting correlations in the nonequilibrium Andreev transport through a quantum dot
• Tunneling through an Anderson impurity between superconductors
• pi-Junction behavior and Andreev bound states in Kondo quantum dots with superconducting leads
• Interplay between Kondo and Majorana interactions in quantum dots
• Josephson current in strongly correlated double quantum dots
• Electron transport through strongly interacting quantum dot coupled to normal metal and superconductor
• Charge Pumping in Mesoscopic Systems coupled to a Superconducting Lead
• Non-local Andreev transport through an interacting quantum dot
• Superconducting proximity effect in interacting quantum dots revealed by shot noise
• Quantum Dot coupled to a normal and a superconducting lead
• Kondo resonance in a multi-probe quantum dot
• Fano-type interference in quantum dots coupled between metallic and superconducting leads
• Andreev Transport through Side-Coupled Double Quantum Dots
• Nonequilibrium transport via spin-induced sub-gap states in superconductor/quantum dot/normal metal cotunnel junctions
• Non-Equilibrium Josephson and Andreev Current through Interacting Quantum Dots
• Electrical control of Kondo effect and superconducting transport in a side-gated InAs quantum dot Josephson junction
• Interplay between Kondo and Andreev-Josephson effects in a quantum dot coupled to one normal and two superconducting leads
• Constructive influence of the induced electron pairing on the Kondo state
• Influence of the pair coherence on the charge tunneling through a quantum dot connected to a superconducting lead
• Probing the exchange field of a quantum-dot spin valve by a superconducting lead
• Meservey-Tedrow-Fulde effect in a quantum dot embedded between metallic and superconducting electrodes
• Correlated electron transport through double quantum dots coupled to normal and superconducting leads
• Adiabatic pumping in a double-dot Cooper-pair beam splitter
• Cross thermoelectric coupling in normal-superconductor quantum dots
• Pumping through a quantum dot in the proximity of a superconductor
• Interplay between direct and crossed Andreev reflections in hybrid nano-structures
• Andreev reflection through Fano resonances in molecular wires
• Local Quasiparticle States around an Anderson Impurity in a d-Wave Superconductor: Kondo Effects
• Decoherence effect on the Fano lineshapes in double quantum dots coupled between normal and superconducting leads
• Zeeman tunability of Andreev bound states in van-der-Waals tunnel barriers
• Renormalization effects in interacting quantum dots coupled to superconducting leads
• Generation of pure spin currents by superconducting proximity effect in quantum dots
• Quantum Dot in the Kondo Regime coupled to p-wave superconductors
• Response time of a normal-superconductor hybrid system under the step-like pulse bias
• Quantum Monte Carlo study of nonequilibrium transport through a quantum dot coupled to normal and superconducting leads
• Fractional Josephson effect versus fractional charge in superconducting-normal metal hybrid circuits
• Kondo screening of Andreev bound states in an N-QD-S system
• Odd-triplet superconductivity in single-level quantum dots
• Fano-Andreev effect in T-shape double-quantum-dot in the Kondo regime
• Charge-vibration interaction effects in normal-superconductor quantum dots
• Non-equilibrium thermoelectric transport across normal metal-Quantum dot-Superconductor hybrid system within the Coulomb blockade regime
• Fano effect of a strongly interacting quantum dot in contact with superconductor
• Driven superconducting proximity effect in interacting quantum dots
• Shot noise in superconducting junctions with weak link formed by Anderson impurity
• Enhanced Andreev Tunneling via the Kondo Resonance in a Quantum Dot at Finite Bias
• Extraordinary Temperature Dependence of the Resonant Andreev Reflection
• Full counting statistics of interacting quantum dots contacted by a normal metal and a superconductor
• Low-temperature transport through a quantum dot between two superconductor leads
• Inelastic Kondo-Andreev tunnelings in a vibrating quantum dot
• Quantum Dot between two Superconductors
• Magnetically stable zero-bias anomaly in Andreev contact to the magnetic Weyl semimetal Co${}_3$Sn${}_2$S${}_2$
• Nonlinear electric and thermoelectric Andreev transport through a hybrid quantum dot coupled to ferromagnetic and superconducting leads
• Transport through a single Anderson impurity coupled to one normal and two superconducting leads
• Stationary transport in mesoscopic hybrid structures with contacts to superconducting and normal wires. A Green's function approach for multiterminal setups
• Kondo Effect in Defect-bound Quantum Dots Coupled to NbSe${}_2$
• Photo-assisted Andreev reflection as a probe of quantum noise
• Current precision in interacting hybrid Normal-Superconducting systems
• Nonequilibrium transport through a quantum dot coupled to normal and superconducting leads
• Changes of Kondo effect in the junction with DIII-class topological and $s$-wave superconductors