Journal
PHYSICAL REVIEW LETTERS
Volume 106, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.186102
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Funding
- MICINN [FIS2010-15127, FIS2010-18847, CTQ2010-17006, FIS2010-19609-C02-00, ACI2008-0777, 2010C-07-25200, CSD2007-00010]
- CAM program NANOBIOMAGNET [S2009/MAT1726]
- Gobierno Vasco-UPV/EHU [IT-366-07]
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Elaborate density functional theory (DFT) calculations that include the effect of van der Waals (vdW) interactions have been carried out for graphene epitaxially grown on Ru(0001). The calculations predict a reduction of structural corrugation in the observed moire pattern of about 25% (similar to 0: 4 angstrom) with respect to DFT calculations without vdW corrections. The simulated STM topographies are close to the experimental ones in a wide range of bias voltage around the Fermi level.
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