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arXiv · 0806.0237

Non-local Andreev transport through an interacting quantum dot

David Futterer·Michele Governale·Marco G. Pala·Jürgen König
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Abstract

We investigate sub-gap transport through a single-level quantum dot tunnel coupled to one superconducting and two normal-conducting leads. Despite the tendency of a large charging energy to suppress the equilibrium proximity effect, a finite Andreev current through the dot can be achieved in non-equilibrium situations. We propose two schemes to identify non-local Andreev transport. In one of them, the presence of strong Coulomb interaction leads to negative values of the non-local conductance as a clear signal of non-local Andreev transport.

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David Futterer, Michele Governale, Marco G. Pala, Jürgen König. 2009-02-12. Non-local Andreev transport through an interacting quantum dot. https://doi.org/10.1103/physrevb.79.054505

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