Tuning the van der Waals Interaction of Graphene with Molecules via Doping
| Autor: | Antonio J. Martínez-Galera, Stefan Blügel, Nicolae Atodiresei, Sebastian Standop, Felix Huttmann, Tim O. Wehling, Thomas Michely, Ikutaro Hamada, Vasile Caciuc, Stefan Schumacher |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Condensed Matter - Materials Science
Materials science Condensed Matter - Mesoscale and Nanoscale Physics Graphene Thermal desorption spectroscopy Binding energy Ab initio Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences General Physics and Astronomy Nanotechnology law.invention Condensed Matter::Materials Science symbols.namesake Atomic orbital law Chemical physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ddc:550 Physics::Atomic and Molecular Clusters symbols Molecule Physics::Chemical Physics van der Waals force Scanning tunneling microscope |
| Zdroj: | Physical review letters 115(23), 236101 (2015). doi:10.1103/PhysRevLett.115.236101 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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