Structure Determination of the Coincidence Phase of Graphene on Ru(0001)

被引：165

作者：

Moritz, W. ^{[1
]}

Wang, B. ^{[2
]}

Bocquet, M. -L. ^{[2
]}

Brugger, T. ^{[3
]}

Greber, T. ^{[3
]}

Wintterlin, J. ^{[4
]}

Guenther, S. ^{[4
]}

机构：

[1] Univ Munich, Dept Geo & Umweltwissensch, D-80333 Munich, Germany

[2] Univ Lyon, Chim Lab, Ecole Normale Super Lyon, CNRS, Lyon, France

[3] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[4] Univ Munich, Dept Chem, D-81377 Munich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 13期

关键词：

ELECTRON-DIFFRACTION INTENSITIES; EPITAXIAL GRAPHENE; GRAPHITE; SURFACES;

D O I：

10.1103/PhysRevLett.104.136102

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The structure of the commensurate (23 X 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 angstrom with a minimum C-Ru distance of 2.1 angstrom. Additionally, lateral displacements of C atoms and a significant buckling in the underlying Ru layers are observed, indicative for strong local C-Ru interactions.

引用

页数：4

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