Structural properties and site specific interactions of Pt with the graphene/Ru(0001) moire overlayer

被引：109

作者：

Donner, Kerstin ^{[1
]}

Jakob, Peter

机构：

[1] Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2009年 / 131卷 / 16期

关键词：

INDUCED RECONSTRUCTION; EPITAXIAL GRAPHENE; METAL-SURFACES; GRAPHITE; RU(0001); ADSORPTION; BENZENE; IR(111); PT(111); GROWTH;

D O I：

10.1063/1.3246166

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The coherence of graphene layers on Ru(0001) over extended distances has been employed to identify fcc and hcp regions of the associated moire superstructure. These findings can be used as a straightforward method to discriminate between fcc and hcp hollow sites of Ru(0001). Our approach thereby makes use of the "magnifying lens" characteristics of the graphene/Ru(0001) overlayer and its coherence across several monatomic steps of the substrate. We demonstrate that the individual regions of the graphene/Ru(0001) overlayer exhibit pronounced variations in interaction strengths with deposited metal atoms. Specifically, Pt clusters have been grown at 140-180 K and they are found to organize in a well-ordered periodic array defined by the moire superlattice. Their preferred location within the graphene/Ru(0001) moire unit cell is identified to be the fcc region. (C) 2009 American Institute of Physics. [doi:10.1063/1.3246166]

引用

页数：10

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