Potential Energy Landscape for hot electrons in periodically nanostructured graphene

Details Potential Energy Landscape for hot electrons in periodically nanostructured graphene Potential Energy Landscape for hot electrons in periodically nanostructured graphene

2010-04-05

arxiv.org/abs/1004.0593v1

Physical Review Letters 105, 036804 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

20 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.105.036804

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. These results show the system behaves as a self-organized periodic array of quantum dots.

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