Structural and electronic properties of pb- intercalated graphene on ru(0001)

Xiangmin Fei, Lizhi Zhang, Wende Xiao*, Hui Chen, Yande Que, Liwei Liu, Kai Yang, Shixuan Du, Hong Jun Gao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

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 λ7 × λ7-R19° 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.

Original languageEnglish
Pages (from-to)9839-9844
Number of pages6
JournalJournal of Physical Chemistry C
Volume119
Issue number18
DOIs
Publication statusPublished - 7 May 2015
Externally publishedYes

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