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Lookup NU author(s): Dr Jon Goss,
Professor Patrick Briddon,
Professor Nick Wright,
Dr Alton Horsfall
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The nature of the interaction between the substrate and the graphene is critical in terms of impact upon the graphene electron dispersion relation, and in terms of charge transfer. We present here the results of density functional simulations of 4H-SiC-graphene heterostructures using large, periodic simulation supercells. We show that covalent bonding between the substrate and graphene leads both to changes in the electronic structure, and extensive charge transfer, but that the larger simulation system yields qualitatively different electronic structure to that from the more usual root 3 x root 3R30 degrees cell.
Author(s): Goss JP, Briddon PR, Wright NG, Horsfall AB
Editor(s): Bauer, AJ; Friedrichs, P; Krieger, M; Pensl, G; Rupp, R; Seyller, T
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 13th International Conference on Silicon Carbide and Related Materials (ICSCRM 2009)
Year of Conference: 2010
Publisher: Materials Science Forum: Trans Tech Publications Ltd
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