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Structure determination of the coincidence phase of graphene on Ru(0001)


Moritz, W; Wang, B; Bocquet, M L; Brugger, T; Greber, T; Wintterlin, J; Günther, S (2010). Structure determination of the coincidence phase of graphene on Ru(0001). Physical Review Letters, 104(13):136102.

Abstract

The structure of the commensurate (23×23) phase of graphene on Ru(0001) has been analyzed by quantitative low-energy electron diffraction (LEED)-I(V) analysis and density-functional theory calculations. The I(V) analysis uses Fourier components as fitting parameters to determine the vertical corrugation and the lateral relaxation of graphene and the top Ru layers. Graphene is shown to be strongly corrugated by 1.5 Å with a minimum C-Ru distance of 2.1 Å. Additionally, lateral displacements of C atoms and a significant buckling in the underlying Ru layers are observed, indicative for strong local C-Ru interactions.

© 2010 The American Physical Society

Abstract

The structure of the commensurate (23×23) phase of graphene on Ru(0001) has been analyzed by quantitative low-energy electron diffraction (LEED)-I(V) analysis and density-functional theory calculations. The I(V) analysis uses Fourier components as fitting parameters to determine the vertical corrugation and the lateral relaxation of graphene and the top Ru layers. Graphene is shown to be strongly corrugated by 1.5 Å with a minimum C-Ru distance of 2.1 Å. Additionally, lateral displacements of C atoms and a significant buckling in the underlying Ru layers are observed, indicative for strong local C-Ru interactions.

© 2010 The American Physical Society

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2010
Deposited On:15 Feb 2011 20:12
Last Modified:07 Dec 2017 07:21
Publisher:American Physical Society
ISSN:0031-9007
Publisher DOI:https://doi.org/10.1103/PhysRevLett.104.136102
PubMed ID:20481896

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