Stable hydrogenated graphene edge types: Normal and reconstructed Klein edges
(2013) Physical review. B, Condensed matter and materials physics — Vol. 88, n° 9, p. 1 (2013)
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- Abstract
- Hydrogenated graphene edges are assumed to be either armchair, zigzag, or a combination of the two. We show that the zigzag is not the most stable fully hydrogenated edge structure along the ⟨21⎯⎯1⎯⎯0⟩ direction. Instead hydrogenated Klein and reconstructed Klein based edges are found to be energetically more favorable, with stabilities approaching that of armchair edges. These new structures “unify” graphene edge topology, the most stable flat hydrogenated graphene edges always consisting of pairwise bonded C2H4 edge groups, irrespective of the edge orientation. When edge rippling is included, CH3 edge groups are most stable. These new fundamental hydrogen-terminated edges have important implications for graphene edge imaging and spectroscopy, as well as mechanisms for graphene growth, nanotube cutting, and nanoribbon formation and behavior.
- Affiliations
Institut des materiaux Jean Rouxel PMN
Citations
Wagner, P., Ivanovskaya, V. V., Melle-Franco, M., Humbert, B., Adjizian, J. J., Briddon, P. R., & Ewels, C. P. (2013). Stable hydrogenated graphene edge types: Normal and reconstructed Klein edges. Physical review. B, Condensed matter and materials physics, 88(9), 1. https://doi.org/10.1103/PhysRevB.88.094106 (Original work published 2013)