Potential barrier of Graphene edges

Details Potential barrier of Graphene edges Potential barrier of Graphene edges

2011-04-10

arxiv.org/abs/1104.1746v3

J. Appl. Phys. 109 (2011) 114308

Physics

Condensed Matter

Materials Science

16 pages, 8 figures. Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any

Scientific paper

We calculated row resolved density of states, charge distribution and work function of graphene's zigzag and armchair edge (either clean or terminated alternatively with H, O or OH group). The zigzag edge saturated via OH group has the lowest work function of 3.76 eV, while the zigzag edge terminated via O has the highest work function of 7.74 eV. The angle-dependent potential barrier on the edge is fitted to a multi-pole model and is explained by the charge distribution.

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