Andreev reflection through Fano resonances in molecular wires

Details Andreev reflection through Fano resonances in molecular wires Andreev reflection through Fano resonances in molecular wires

2008-11-06

arxiv.org/abs/0811.0950v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages 4 figures

Scientific paper

10.1103/PhysRevB.79.075119

We study Andreev reflection in a normal conductor-molecule-superconductor junction using a first principles approach. In particular, we focus on a family of molecules consisting of a molecular backbone and a weakly coupled side group. We show that the presence of the side group can lead to a Fano resonance in the Andreev reflection. We use a simple theoretical model to explain the results of the numerical calculations and to make predictions about the possible sub-gap resonance structures in the Andreev reflection coefficient.

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