Fano-Andreev effect in a T-shaped double quantum dot in the Coulomb blockade regime
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 antiresonance lineshapes 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.
- Publication:
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European Physical Journal Plus
- Pub Date:
- September 2024
- DOI:
- 10.1140/epjp/s13360-024-05544-x
- arXiv:
- arXiv:2311.04445
- Bibcode:
- 2024EPJP..139..790G
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Superconductivity;
- Quantum Physics
- E-Print:
- 14 pages, 12 figures