title: Josephson-current-induced conformational switching of a molecular quantum dot.
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.
authors.affiliation: Institut für Theoretische Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Zazunov
authors.forename: A
authors.initials: A
authors.lastname: Schulz
authors.forename: R
authors.initials: R
authors.lastname: Egger