Nonequilibrium dynamics of Andreev states in the Kondo regime

The transport properties of a quantum dot coupled to superconducting leads are analyzed. It is shown that the quasiparticle current in the Kondo regime is determined by the nonequilibrium dynamics of subgap states (Andreev states) under an applied voltage. The current at low bias is suppressed expon...

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Published in:Physical review letters 2003-12, Vol.91 (26 Pt 1), p.266802-266802, Article 266802
Main Authors: Yeyati, A Levy, Martín-Rodero, A, Vecino, E
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Language:English
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cited_by cdi_FETCH-LOGICAL-c305t-3ba674196bc9838d2fd224ba32905a9c4957dc5c0a68c82732ffc8c09b1b75603
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container_end_page 266802
container_issue 26 Pt 1
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container_title Physical review letters
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creator Yeyati, A Levy
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description The transport properties of a quantum dot coupled to superconducting leads are analyzed. It is shown that the quasiparticle current in the Kondo regime is determined by the nonequilibrium dynamics of subgap states (Andreev states) under an applied voltage. The current at low bias is suppressed exponentially for decreasing Kondo temperature in agreement with recent experiments. We also predict novel interference effects due to multiple Landau-Zener transitions between Andreev states.
doi_str_mv 10.1103/PhysRevLett.91.266802
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title Nonequilibrium dynamics of Andreev states in the Kondo regime
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