Abstract
Low-energy electron microscopy reveals a mode of graphene growth on Ru(0001) in which Ru atoms are etched from a step edge and injected under a growing graphene sheet. Based on density-functional calculations, we propose a model wherein injected Ru atoms form metastable islands under the graphene. Scanning tunneling microscopy reveals that dislocation networks exist near step edges, consistent with some of the injected atoms being incorporated into the topmost Ru layer, thereby increasing its density
2 More- Received 11 September 2009
DOI:https://doi.org/10.1103/PhysRevB.80.235422
©2009 American Physical Society