Josephson-Current-Induced Conformational Switching of a Molecular Quantum Dot
A. Zazunov, A. Schulz, R. Egger
DOI 10.1103/PhysRevLett.102.047002 · Physical Review Letters
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Abstract
We discuss the behavior of a two-level system coupled to a quantum dot contacted by superconducting source and 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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