Charge-Kondo effect in mesoscopic superconductors coupled to normal metals
Ion Garate
DOI 10.1103/PhysRevB.84.085121 · Physical Review B
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Abstract
We develop a theoretical proposal for the charge-Kondo effect in mesoscopic normal-superconductor-normal heterostructures, where the superconducting gap exceeds the electrostatic charging energy. Charge-Kondo correlations in these devices alter the conventional temperature dependence of Andreev reflection and electron cotunneling. We predict typical Kondo temperatures of ≳10 mK, and suggest experimental architectures that combine superconducting charge qubits with semiconducting nanowires at cryogenic temperatures.
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