Non-equilibrium dynamics of Andreev states in the Kondo regime

Details Non-equilibrium dynamics of Andreev states in the Kondo regime Non-equilibrium dynamics of Andreev states in the Kondo regime

2003-10-23

arxiv.org/abs/cond-mat/0310554v1

Phys. Rev. Lett. 91, 266802 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Revtex4, 4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.91.266802

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 non-equilibrium 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.

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