Regensburg 2022 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 74: Organic Molecules at Surfaces 5: Molecular Switches
O 74.4: Vortrag
Donnerstag, 8. September 2022, 15:45–16:00, S054
Dynamics of a chiral molecular rotor under a scanning-tunneling microscope — •Richard Korytár1 and Ferdinand Evers2 — 1Charles University, Prague — 2Universität Regensburg
Motivated by an experimentally realized chiral molecular switch, we devise a classical theory of the switching process, relevant for molecular electronics. The system of interest is a chiral molecular rotor in a scanning-tunneling setup, i.e. the switching occurs under the electric current. The molecule is modeled by a path in three dimensions. The path is massive and can rotate around a fixed axis. The incident electron traverses the path, inducing a torque on the path. We represent this two-body dynamics in a Lagrangian formalism. Switching mechanism and switching rates are discussed.