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MA: Fachverband Magnetismus

MA 37: Transport: Molecular Electronics and Photonics 1
(Joint session of CPP, DS, HL, MA, O and TT organized by TT)

MA 37.6: Talk

Thursday, March 10, 2016, 10:45–11:00, H23

Single Molecule Junctions with Epitaxial Monolayer Graphene Electrodes — •Konrad Ullmann¹, Pedro B. Coto², Susanne Leitherer², Michael Thoss², and Heiko B. Weber¹ — ¹Lehrstuhl für Angewandte Physik und Interdisziplinäres Zentrum für Molekulare Materialien, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) — ²Institut für Theoretische Physik und Interdisziplinäres Zentrum für Molekulare Materialien, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)

To study transport through single molecules, a two dimensional, open-access testbed for individual molecules is desirable. Therefore we use epitaxial monolayer graphene to fabricate electrodes for single molecule junctions. With the help of a feedback-controlled electro-burning process nanometer sized gaps can be formed reproducibly. Using these electrodes, we studied transport through molecules with different anchor groups at low temperatures. Strong similarities in results obtained with the MCBJ-technique underline the high quality of our experimental data. For a fullerene-endcapped molecule we are able to assign features from the I-V characteristics to internal molecular degrees of freedom [1].
K. Ullmann et al., Nano Lett. 15, 3512 (2015)