Lookup NU author(s): Professor Patrick Briddon
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The mechanical and electrical properties of graphite and related materials such as multilayer graphene depend strongly on the presence of defects in the lattice structure, particularly those which create links between adjacent planes. We present findings which suggest the existence of a new type of defect in the graphite or graphene structure which connects adjacent planes through continuous hexagonal sp(2) bonding alone and can form through the aggregation of individual vacancy defects. The energetics and kinetics of the formation of this type of defect are investigated with atomistic density functional theory calculations. The resultant structures are then employed to simulate high resolution transmission electron microscopy images, which are compared to recent experimental images of electron irradiation damaged graphite.
Author(s): Trevethan T, Dyulgerova P, Latham CD, Heggie MI, Seabourne CR, Scott AJ, Briddon PR, Rayson MJ
Publication type: Article
Publication status: Published
Journal: Physical Review Letters
Print publication date: 27/08/2013
ISSN (print): 0031-9007
ISSN (electronic): 1079-7114
Publisher: American Physical Society
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