Regensburg 2013 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 21: Transport: Molecular Electronics (joint session TT/CPP/HL/MA)
CPP 21.2: Vortrag
Mittwoch, 13. März 2013, 09:45–10:00, H2
Electrical Characterization of Single Molecules via MCBJ — •Matthias Wieser1, Torsten Sendler1, Shou-Peng Liu2, Samuel Weisbrod2, Zhuo Tang2, Andreas Marx2, Jannic Wolf2, Elke Scheer2, Francesca Moresco3, Grebing Jochen1, and Artur Erbe1 — 1Helmholtz-Zentrum Dresden-Rossendorf e.V., D-01328 Dresden — 2Universität Konstanz, D-78457 Konstanz — 3Max Bergmann Center of Biomaterials, D-01069 Dresden
For future molecular electronics applications the detailed knowledge about the electrical transport properties of single molecules is very important. To achieve this goal we are using the mechanical controllable break junction technique in liquid environments in combination with insulating substrates. We characterize the electrical conductance and I-V characteristics of single molecules which consist of three phenyl rings connected by triple carbon bonds with two oxygen sidegroups binding to the central ring. The I-V characteristics are further investigated by creating 2D histograms for hundreds of I-V curves and by fitting a single level model which provides us the metal-molecule junction coupling constants and the molecular energy level.