SurfaceScience21 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 62: Poster Session V: Organic molecules on inorganic substrates: electronic, optical and other properties I

O 62.1: Poster

Mittwoch, 3. März 2021, 10:30–12:30, P

Plasmon-driven motion of an individual molecule — •Tzu-Chao Hung, Brian Kiraly, Julian Strik, Alexander Khajetoorians, and Daniel Wegner — Institute for Molecules and Materials, Nijmegen, The Netherlands

Combining scanning tunneling microscopy (STM) and spectroscopy (STS) with STM-induced light emission, we demonstrate that nanocavity plasmons injected a few nanometers away from a molecule can induce molecular motion. For this, we studied the rapid shuttling motion of zinc phthalocyanine molecules adsorbed on ultrathin NaCl films. Single-molecule luminescence spectra from molecules anchored to a step edge were compared with isolated molecules adsorbed on the free surface. We found that the azimuthal modulation of the Lamb shift is almost two times larger compared to isolated molecules. A remotely induced rapid shuttling motion of isolated molecules by plasmon-exciton coupling can explain the difference. Plasmon-induced molecular motion may open an interesting playground to bridge the nanoscopic and mesoscopic world by combining molecular machines with nanoplasmonics to control directed motion of single molecules without the need for a local probe.