TITLE

Graphene on gold: Electron density of states studies by scanning tunneling spectroscopy

AUTHOR(S)
Klusek, Z.; Dabrowski, P.; Kowalczyk, P.; Kozlowski, W.; Olejniczak, W.; Blake, P.; Szybowicz, M.; Runka, T.
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/14/2009, Vol. 95 Issue 11, p113114
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Graphene devices require electric contacts with metals, particularly with gold. Scanning tunneling spectroscopy studies of electron local density of states performed on mono-, bi-, and trigraphene layer deposited on metallic Au/Cr/SiO2/Si substrate shows that gold substrate causes the Fermi level shift downwards which means that holes are donated by metal substrate to graphene which becomes p-type doped. These experimental results are in good accordance with recently published density function theory calculations.
ACCESSION #
44292263

 

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