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Regensburg 2010 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 36: TR: Poster Session

TT 36.22: Poster

Donnerstag, 25. März 2010, 14:00–18:00, Poster A

Inelastic Electron Tunneling Spectroscopy of a Single-Molecule Break Junction — •Youngsang Kim1, Hyunwook Song2, Hans-Fridtjof Pernau1, Takhee Lee2, and Elke Scheer11Department of Physics, University of Konstanz, D-78457 Konstanz, Germany — 2Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea

We report the inelastic electron tunneling (IET) spectra of an 1,6-hexanedithiol (HDT) single-molecule junction using a mechanically controllable break junction (MCBJ) technique. We measure the completely assigned IET spectra of the HDT junction. All of the spectral features are attributable to vibrational modes associated with the molecular species, providing a clear evidence of the existence of the component molecule through which tunneling is occurring. In addition, we discuss the effect of the junction elongation by changing the separation between two electrodes in MCBJ, which gives rise to changes in the configuration in the single-molecule junction.

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