The orientation of CO intercalated between graphene and Ru(0001)

被引：4
|
作者：
Li, Tianbai [1 ]
Yarmoff, Jory A. [1 ]
机构：
[1] Univ Calif Riverside, Dept Phys & Astron, 900 Univ Ave, Riverside, CA 92521 USA
来源：
SURFACE SCIENCE | 2019年 / 680卷
基金：
美国国家科学基金会;
关键词：
Graphene; Intercalation; Ion scattering; Molecular orientation; HE+ ION-SCATTERING; EPITAXIAL GRAPHENE; OXYGEN INTERCALATION; ADSORPTION; MECHANISM; SURFACE; GROWTH;
D O I：
10.1016/j.susc.2018.10.009
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：
(CO)-C-13 molecules are intercalated under a single layer graphene film on Ru(0001) and interrogated with helium low energy ion scattering. Single scattering is used to determine the mass distribution of atomic species visible to the ion beam and detector, and the scattering angle is varied to distinguish adsorbed from intercalated molecules. At room temperature, CO intercalates as molecules that sit upright with the O end on top, as on clean Ru. When the temperature is raised, the intercalated CO tilts more than it does on clean Ru. This is presumably due to increased vibrational amplitudes combined with the confining effect of the graphene film.
引用
收藏
页码：6 / 10
页数：5
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