Hauptseite > Publikationsdatenbank > Tuning the van der Waals Interaction of Graphene with Molecules via Doping |
Journal Article | FZJ-2016-00755 |
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2015
APS
College Park, Md.
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Please use a persistent id in citations: http://hdl.handle.net/2128/11151 doi:10.1103/PhysRevLett.115.236101
Abstract: We use scanning tunneling microscopy to visualize and thermal desorption spectroscopy to quantitatively measure that the binding of naphthalene molecules to graphene, a case of pure van der Waals interaction, strengthens with n and weakens with p doping of graphene. Density-functional theory calculations that include the van der Waals interaction in a seamless, ab initio way accurately reproduce the observed trend in binding energies. Based on a model calculation, we propose that the van der Waals interaction is modified by changing the spatial extent of graphene’s π orbitals via doping.
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