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CPP: Chemische Physik und Polymerphysik

CPP 12: Strukturierte Polymeroberfl
ächen

CPP 12.4: Vortrag

Donnerstag, 27. März 2003, 11:00–11:15, ZEU/260

Electronic transport through self-assembled monolayers of 1,4-phenylene diisocyanide — •U. Beierlein, C. Dupraz, and J. P. Kotthaus — Center for NanoScience and Sektion Physik, Ludwig-Maximilians-Universitaet, Geschwister-Scholl Platz 1, 80539 Muenchen

We report electronic transport measurements on gold/1,4-phenylene-diisocyanide/gold junctions using two different contact architectures. In the first technique, the self-assembled monolayer (SAM) of 1,4-phenylene diisocyanide is sandwiched between electron-beam defined bottom and top metallic contacts. The second architecture employs opposing planar gold contacts with a sub 10 nm gap between them, in which chains of 1,4-phenylene diisocyanide can be inserted. Low temperature measurements showed characteristic peak structures in the conductance curves as a function of source-drain voltage. These features may be attributed to either Coulomb blockade effects, coherent transport through the molecular eigenstates or to vibrational modes of the molecule.