Fano-Andreev effect in T-shape double-quantum-dot in the Kondo regime

Abstract

In the present work, we investigate the electronic transport through a T-shape double quantum dot system coupled to two normal leads and to one superconducting lead. We explore the interplay between Kondo and Andreev states due to proximity effects. We find that Kondo resonance is modified by the Andreev bound states, which manifest through Fano antiresonances in the local density of states of the embedded quantum dot and normal transmission. This means that there is a correlation between Andreev bound states and Fano resonances that is robust under the influence of high electronic correlation. We have also found that the dominant couplings at the quantum dots are characterized by a crossover region that defines the range where the Fano-Kondo and the Andreev-Kondo effect prevail in each quantum dot. Likewise, we find that the interaction between Kondo and Andreev bound states has a notable influence on the Andreev transport.

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Cited by in corpus (7)

• Quantum transport through a quantum dot side-coupled to a Majorana bound state pair in the presence of electron-phonon interaction
• Anomalous Fano Resonance in Double Quantum Dot System Coupled to Superconductor
• Well-defined Fano effect in the Andreev reflection process of a parallel double-quantum-dot structure
• Interplay of the Kondo effect with the induced pairing in electronic and caloric properties of T-shaped double quantum dots
• Transport properties of proximitized double quantum dots
• Properties of multiterminal superconducting nanostructure with double quantum dot
• Quench dynamics of Fano-like resonances in the presence of the on-dot superconducting pairing