Electronic band structure imaging of three layer twisted graphene on single crystal Cu(111)

J. Marquez Velasco, N. Kelaidis, E. Xenogiannopoulou, Y. S. Raptis, D. Tsoutsou, P. Tsipas, Th Speliotis, G. Pilatos, V. Likodimos, P. Falaras, A. Dimoulas

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Abstract

Few layer graphene (FLG) is grown on single crystal Cu(111) by Chemical Vapor Deposition, and the electronic valence band structure is imaged by Angle-Resolved Photo-Emission Spectroscopy. It is found that graphene essentially grows polycrystalline. Three nearly ideal Dirac cones are observed along the Cu Γ ̄ K ̄ direction in k-space, attributed to the presence of ∼4°twisted three layer graphene with negligible interlayer coupling. The number of layers and the stacking order are compatible with Raman data analysis demonstrating the complementarity of the two techniques for a more accurate characterization of FLG.

Original languageEnglish
Article number213108
JournalApplied Physics Letters
Volume103
Issue number21
DOIs
Publication statusPublished - 18 Nov 2013
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Marquez Velasco, J., Kelaidis, N., Xenogiannopoulou, E., Raptis, Y. S., Tsoutsou, D., Tsipas, P., ... Dimoulas, A. (2013). Electronic band structure imaging of three layer twisted graphene on single crystal Cu(111). Applied Physics Letters, 103(21), [213108]. https://doi.org/10.1063/1.4832477