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Redox-Dependent Franck–Condon Blockade and Avalanche Transport in a Graphene–Fullerene Single-Molecule Transistor

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journal contribution
posted on 13.01.2016 by Chit Siong Lau, Hatef Sadeghi, Gregory Rogers, Sara Sangtarash, Panagiotis Dallas, Kyriakos Porfyrakis, Jamie Warner, Colin J. Lambert, G. Andrew D. Briggs, Jan A. Mol
We report transport measurements on a graphene–fullerene single-molecule transistor. The device architecture where a functionalized C60 binds to graphene nanoelectrodes results in strong electron–vibron coupling and weak vibron relaxation. Using a combined approach of transport spectroscopy, Raman spectroscopy, and DFT calculations, we demonstrate center-of-mass oscillations, redox-dependent Franck–Condon blockade, and a transport regime characterized by avalanche tunnelling in a single-molecule transistor.