Graphene/Rh(111) structure studied using in-situ scanning tunneling microscopy

Guo Cai Dong*, D. V. Baarle, J. Frenken, Qi Wen Tang

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Scanning tunnel microscopy (STM) is performed to verify if an Rh 'nails' structure is formed accompanying the graphene growing during chemical vapor deposition. A structure of a graphene island in an Rh vacancy island is used as the start. While the graphene island is removed by oxygenation, the variations of the Rh vacancy island are imaged with an in-situ high-temperature STM. By fitting with our model and calculations, we conclude that the best fit is obtained for 0% Rh, i.e., for the complete absence of nails below graphene on Rh(111). That is, when graphene is formed on Rh(111), the substrate remains flat and does not develop a supporting nail structure.

Original languageEnglish
Article number116101
JournalChinese Physics Letters
Volume33
Issue number11
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes

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