Structural and Electronic Properties of Pb- Intercalated Graphene on Ru(0001)

被引：27
|
作者：
Fei, Xiangmin [1 ]
Zhang, Lizhi [1 ]
Xiao, Wende [1 ]
Chen, Hui [1 ]
Que, Yande [1 ]
Liu, Liwei [1 ]
Yang, Kai [1 ]
Du, Shixuan [1 ]
Gao, Hong-Jun [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2015年 / 119卷 / 18期
关键词：
EPITAXIAL GRAPHENE; SUBSTRATE; TRANSPORT; SURFACES; PHASE; GAS;
D O I：
10.1021/acs.jpcc.5b00528
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 Pb intercalation at the interface of monolayer graphene (MG) and Ru(0001) is studied by means of low temperature scanning tunneling microscopy (LT-STM) and Raman spectroscopy. Despite being covered by MG, the atomic structures of the Pb layer formed between MG and Ru(0001) have been directly imaged using LT-STM. The Pb layer intercalated underneath MG exhibits a root 7 x root 7-R19 degrees superstructure with respect to the Ru(0001) surface. STM and Raman spectroscopy measurements and density functional theory calculations reveal that the epitaxial MG are effectively decoupled from the Ru(0001) substrate and recover its intrinsic electronic property after Pb intercalation.
引用
收藏
页码：9839 / 9844
页数：6
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