Potential energy landscape for hot electrons in periodically nanostructured graphene.
Phys Rev Lett
; 105(3): 036804, 2010 Jul 16.
Article
in En
| MEDLINE
| ID: mdl-20867790
ABSTRACT
We explore the spatial variations of the unoccupied electronic states of graphene epitaxially grown on Ru(0001) and observed three unexpected features the first graphene image state is split in energy; unlike all other image states, the split state does not follow the local work function modulation, and a new interfacial state at +3 eV appears on some areas of the surface. First-principles calculations explain the observations and permit us to conclude that the system behaves as a self-organized periodic array of quantum dots.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2010
Document type:
Article
Affiliation country:
España