Periodically Rippled Graphene: Growth and Spatially Resolved Electronic Structure
Authors:
- A. L. Vázquez de PargaAPA. L. Vázquez de Parga
- F. CallejaFCF. Calleja
- B. BorcaB. Borca
- M. C. G. PasseggiMPM. C. G. Passeggi
- F. GuineaFGF. Guinea
- R. MirandaRMR. Miranda
- 7 February 2008
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 100 (5) , 056807
Abstract
We grow epitaxial graphene monolayers on Ru(0001) that cover uniformly the substrate over lateral distances larger than several microns. The weakly coupled graphene monolayer is periodically rippled and it shows charge inhomogeneities in the charge distribution. Real space measurements by scanning tunneling spectroscopy reveal the existence of electron pockets at the higher parts of the ripples, as predicted by a simple theoretical model. We also visualize the geometric and electronic structure of edges of graphene nanoislands.Keywords
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