Regensburg 2013 – wissenschaftliches Programm
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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.