Non-local Andreev transport through an interacting quantum dot

Details Non-local Andreev transport through an interacting quantum dot Non-local Andreev transport through an interacting quantum dot

2008-06-02

arxiv.org/abs/0806.0237v2

Phys RevB 79, 054505 (2009)

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.79.054505

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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