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arXiv · 1107.0481

Charge-Kondo Effect in Mesoscopic Superconductors Coupled to Normal Metals

Ion Garate
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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 $\gtrsim 10 {\rm mK}$, and suggest experimental architectures that combine superconducting charge-qubits with semiconducting nanowires at cryogenic temperatures.

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Ion Garate. 2011-07-03. Charge-Kondo Effect in Mesoscopic Superconductors Coupled to Normal Metals. https://doi.org/10.1103/physrevb.84.085121

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