Metal-Quantum Dot-Topological Superconductor Junction: Kondo correlations and Majorana Bound States

Abstract

Electron transport through [normal metal]-[quantum dot]-[topological superconductor] junction is studied and reveals interlacing physics of Kondo correlations with two Majorana fermions bound state residing on the opposite edges of the topological superconductor. When the strength of the Majorana fermion coupling exceeds the temperature $T$, this combination of Kono-Majorana fermion physics can be observed: The usual peak of the temperature dependent zero biased conductance $\sigma (V=0,T)$ splits and the conductance has a {\it dip} at T=0. The height of the conductance side-peaks decreases with magnetic field.

5 two column pages

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• Andreev and Majorana bound states in single and double quantum dot structures
• Renormalization of quantum dot $g$-factor in superconducting Rashba nanowires
• Probing Majorana bound states via counting statistics of a single electron transistor
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• Multiple Andreev reflections in s-wave superconductor-quantum dot- topological superconductor tunnel junctions and Majorana bound states
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• Interplay between Coulomb blockade and Josephson effect in a topological superconductor-quantum dot device
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• Kondo Tunneling into a Quantum Spin Hall Insulator
• Phase transitions in quantum dot-Majorana zero mode coupling systems
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• Continuous unitary transformation approach to the Kondo-Majorana interplay
• Electrical transport through a quantum dot side-coupled to a topological superconductor
• Interplay of correlations and Majorana mode from local solution perspective
• Quantum capacitance and parity switching of a quantum-dot-based Kitaev chain