Kondo physics in double quantum dot based Cooper pair splitters

Abstract

The Andreev transport properties of double quantum dot based Cooper pair splitters with one superconducting and two normal leads are studied theoretically in the Kondo regime. The influence of the superconducting pairing correlations on the local density of states, Andreev transmission coefficient and Cooper pair splitting efficiency is thoroughly analyzed. It is shown that finite superconducting pairing potential quickly suppresses the SU(2) Kondo effect, which can however reemerge for relatively large values of coupling to superconductor. In the SU(4) Kondo regime, a crossover from the SU(4) to the SU(2) Kondo state is found as the coupling to superconductor is enhanced. The analysis is performed by means of the density-matrix numerical renormalization group method.

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Cited by in corpus (16)

• The SU(4) Kondo effect in double quantum dots with ferromagnetic leads
• Majorana mode leaking into a spin-charge entangled double quantum dot
• Current cross-correlations and waiting time distributions in Andreev transport through Cooper pair splitters based on triple quantum dots
• Splitting efficiency and interference effects in a Cooper pair splitter based on a triple quantum dot with ferromagnetic contacts
• Interplay of the Kondo effect with the induced pairing in electronic and caloric properties of T-shaped double quantum dots
• Transient effects in double quantum dot sandwiched laterally between superconducting and metallic leads
• Nonlocal Andreev Reflections as a Source of Spin Exchange and Kondo Screening
• Double-quantum-dot Andreev molecules: Phase diagrams and critical evaluation of effective models
• Single-photon pump by Cooper-pair splitting
• Suppressed Josephson phase transition in one parallel double-quantum-dot junction
• Nonlocal Andreev transport through a quantum dot in a magnetic field: Interplay between Kondo, Zeeman, and Cooper-pair correlations
• Autler-Townes Doublet observation via a Cooper-Pair Beam Splitter
• Transport properties of proximitized double quantum dots
• A Cooper-pair beam splitter as a feasible source of entangled electrons
• Transient triplet blockade in Andreev junction
• Three-body Fermi-liquid corrections for Andreev transport through quantum dots