Fano-Andreev effect in a T-shaped Double Quantum Dot in the Coulomb blockade regime

• URL: http://arxiv.org/abs/2311.04445v2
• Date: Tue, 28 Nov 2023 01:23:58 GMT
• Title: Fano-Andreev effect in a T-shaped Double Quantum Dot in the Coulomb blockade regime
• Authors: A. Gonz\'alez I., A. M. Calle, M. Pacheco, E. C. Siqueira, Pedro A. Orellana
• Abstract summary: We studied the effects of superconducting quantum correlations in a system consisting of two quantum dots, two normal leads, and a superconductor. We found that the superconducting correlations resulted in Fano-Andreev interference, which is characterized by two anti-resonance line shapes.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We studied the effects of superconducting quantum correlations in a system consisting of two quantum dots, two normal leads, and a superconductor. Using the non-equilibrium Green's functions method, we analyzed the transmission, density of states, and differential conductance of electrons between the normal leads. We found that the superconducting correlations resulted in Fano-Andreev interference, which is characterized by two anti-resonance line shapes in all of these quantities. This behavior was observed in both equilibrium and non-equilibrium regimes and persisted even when Coulomb correlations were taken into account using the Hubbard-I approximation. It is worth noting that the robustness of this behavior against these conditions has not been studied previously in the literature.

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