TITLE

Anisotropic transport in graphene on SiC substrate with periodic nanofacets

AUTHOR(S)
Odaka, S.; Miyazaki, H.; Li, S.-L.; Kanda, A.; Morita, K.; Tanaka, S.; Miyata, Y.; Kataura, H.; Tsukagoshi, K.; Aoyagi, Y.
PUB. DATE
February 2010
SOURCE
Applied Physics Letters;2/8/2010, Vol. 96 Issue 6, p062111
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Anisotropic transport in graphene field-effect transistors fabricated on a vicinal SiC substrate with a self-organized periodic nanofacet structure is investigated. Graphene thermally grown on a vicinal substrate contains two following regions: atomically flat terraces and nanofacets (atomically stepped slopes). The graphene film at a nanofacet is continuously connected between two neighboring terrace films. Anisotropic transport properties are clearly observed, indicating a difference in the graphene properties of the two regions. The observed anisotropic properties are discussed in terms of the effects of nanofacet structures on conductivity and electron mobility.
ACCESSION #
48067923

 

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