Current versus temperature-induced switching in a single-molecule tunnel junction: 1,5 cyclooctadiene on Si(001).
The biconformational switching of single cyclooctadiene molecules chemisorbed on a Si(001) surface was explored by quantum chemical and quantum dynamical calculations and low-temperature scanning tunneling microscopy experiments. The calculations rationalize the experimentally observed switching driven by inelastic electron tunneling (IET) at 5 K. At higher temperatures, they predict a controllable crossover behavior between IET-driven and thermally activated switching, which is fully confirmed by experiment.
Nacci
Christophe
C
Paul-Drude-Institut für Festkörperelektronik, D-10117 Berlin, Germany.
Fölsch
Stefan
S
Zenichowski
Karl
K
Dokić
Jadranka
J
Klamroth
Tillmann
T
Saalfrank
Peter
P