Influence of the pair coherence on the charge tunneling through a quantum dot connected to a superconducting lead

T. Domanski A. Donabidowicz; K. I. Wysokinski

doi:10.1103/physrevb.76.104514

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arXiv · cond-mat/0612440

Influence of the pair coherence on the charge tunneling through a quantum dot connected to a superconducting lead

T. Domanski A. Donabidowicz·K. I. Wysokinski

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Abstract

We analyze the charge transport through a single level quantum dot coupled to a normal (N) and superconducting (S) leads where the electron pairs exist either as the coherent (for temperatures below T_c) or incoherent objects (in a region T_c < T < T*). This situation can be achieved in practice if one uses the high T_c superconducting material where various precursor effects have been observed upon approaching $T_{c}$ from above. Without restricting to any particular microscopic mechanism we investigate some qualitative changes of the nonequilibrium charge current caused by the electron pair coherence.

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T. Domanski A. Donabidowicz, K. I. Wysokinski. 2006-12-17. Influence of the pair coherence on the charge tunneling through a quantum dot connected to a superconducting lead. https://doi.org/10.1103/physrevb.76.104514

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