Interplay between particle-hole splitting and the Kondo effect in quantum dots

Abstract

We discuss the influence of proximity effect on the quantum dot located between metallic and superconducting electrodes and consider its interplay with the Kondo state arising from the on-dot correlations. We show that upon increasing the hybridization to superconducting lead the Kondo resonance is gradually washed out. This behavior indirectly affects the subgap charge transport suppressing the zero-bias enhancement of the Andreev conductance.