Image-potential states and work function of graphene.
J Phys Condens Matter
; 26(39): 393001, 2014 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-25164535
ABSTRACT
Image-potential states of graphene on various substrates have been investigated by two-photon photoemission and scanning tunneling spectroscopy. They are used as a probe for the graphene-substrate interaction and resulting changes in the (local) work function. The latter is driven by the work function difference between graphene and the substrate. This results in a charge transfer which also contributes to core-level shifts in x-ray photoemission. In this review article, we give an overview over the theoretical models and the experimental data for image-potential states and work function of graphene on various substrates.
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MEDLINE
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En
Ano de publicação:
2014
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Article