Berlin 2012 – scientific programme
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O: Fachverband Oberflächenphysik
O 67: Metal surfaces: Adsorption of H/O and inorganic molecules
O 67.1: Talk
Thursday, March 29, 2012, 10:30–10:45, MA 043
Two-Level Conductance Fluctuations of a Single-Molecule Junction — •Nicolas Néel1,2, Jörg Kröger2, and Richard Berndt1 — 1Christian Albrechts Universität zu Kiel — 2Technische Universität Ilmenau
The conductance of a single-molecule junction in a low temperature scanning tunneling microscope has been measured at nanosecond time resolution. In a transition region between tunneling and contact the conductance exhibits rapid two-level fluctuations which are attributed to different geometries of the junction. The voltage dependence of the fluctuations indicates that electrons injected into the lowest unoccupied molecular orbital may efficiently couple to molecular vibrations. Financial support through SFB 677 is acknowledged.
N. Néel, J. Kröger, and R. Berndt, Nano Lett. 11, 3593 (2011)