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TT: Fachverband Tiefe Temperaturen

TT 58: Poster Session Transport & Matter at Low Temperature

TT 58.21: Poster

Donnerstag, 14. März 2013, 15:00–19:00, Poster D

Electrical characterization of single organic molecules via mechanically controllable break junctions — •Torsten Sendler¹, Matthias Wieser¹, Shou-Peng Liu², Samuel Weisbrod², Zhou Tang², Andreas Marx², Jannic Wolf², Thomas Kuhn², Elke Scheer², Francesca Morecso³, Jochen Grebing¹, and Artur Erbe¹ — ¹Helmholtz-Zentrum Dresden-Rossendorf, Germany — ²Universität Konstanz, Germany — ³Max Bergmann Center of Biomaterials, Germany

Molecular electronics has been of big interest for the last years. To allow an electrical characterization of single molecules a reliable contact to gold atoms is required. We ensure this by using single organic molecules with a plain structure, in particular 1,4-Diethoxy-2,5-bis (4-sulfanyl-phenylethynyl)-benzene and single stranded DNA fragments, dissolved in an organic non-polar solvent. For measurements we use the technique of mechanically controllable break junctions. IV-curves taken from single molecules connected to single gold atom contacts show the expected tunneling behavior, from which we gain the energy of the molecular level and the coupling between electrode and molecule.