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arXiv · 0812.3774

Josephson-current induced conformational switching of a molecular quantum dot

A. Zazunov·A. Schulz·R. Egger
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Abstract

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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A. Zazunov, A. Schulz, R. Egger. 2008-12-19. Josephson-current induced conformational switching of a molecular quantum dot. https://doi.org/10.1103/physrevlett.102.047002

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