Josephson-current induced conformational switching of a molecular quantum dot

Details Josephson-current induced conformational switching of a molecular quantum dot Josephson-current induced conformational switching of a molecular quantum dot

2008-12-19

arxiv.org/abs/0812.3774v1

Phys. Rev. Lett. 102, 047002 (2009)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures, accepted to PRL

Scientific paper

10.1103/PhysRevLett.102.047002

We discuss the behavior of a two-level system coupled to a quantum dot contacted by superconducting source/drain electrodes, representing a simple model for the conformational degree of freedom of a molecular dot or a break junction. The Josephson current is shown to induce conformational changes, including a complete reversal. For small bias voltage, periodic conformational motions induced by Landau-Zener transitions between Andreev states are predicted.

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