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Title

Chemical control of electrical contact to sp2 carbon atoms

AuthorsFrederiksen, Thomas; Foti, Giuseppe; Scheurer, Fabrice; Speisser, Virginie; Schull, Guillaume
Issue Date2014
PublisherNature Publishing Group
CitationNature Communications 5: 3659 (2014)
AbstractCarbon-based nanostructures are attracting tremendous interest as components in ultrafast electronics and optoelectronics. The electrical interfaces to these structures play a crucial role for the electron transport, but the lack of control at the atomic scale can hamper device functionality and integration into operating circuitry. Here we study a prototype carbon-based molecular junction consisting of a single C 60 molecule and probe how the electric current through the junction depends on the chemical nature of the foremost electrode atom in contact with the molecule. We find that the efficiency of charge injection to a C 60 molecule varies substantially for the considered metallic species, and demonstrate that the relative strength of the metal-C bond can be extracted from our transport measurements. Our study further suggests that a single-C 60 junction is a basic model to explore the properties of electrical contacts to meso-and macroscopic sp 2 carbon structures. © 2014 Macmillan Publishers Limited.
DescriptionThis work is licensed under a Creative Commons Attribution 3.0 Unported License.
Publisher version (URL)http://dx.doi.org/10.1038/ncomms4659
URIhttp://hdl.handle.net/10261/102719
DOI10.1038/ncomms4659
Identifiersdoi: 10.1038/ncomms4659
e-issn: 2041-1723
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