We study resonant Andreev tunneling through a strongly interacting quantum dot connected to a normal and to a superconducting lead. We obtain a formula for the Andreev current and apply it to discuss the linear and nonlinear transport in the nonperturbative regime, where the effects of the Kondo resonance on the two-particle tunneling arise. In particular, we notice an enhancement of the Kondo anomaly in the I-V characteristics due to the superconducting electrode.
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Fazio et al. (1998) studied this question.
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