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

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{sup ¯}K{sup ¯} 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.
Authors:
 [1] ;  [2] ; ; ; ; ; ; ; ; ;  [1] ;  [3]
  1. National Center for Scientific Research “Demokritos,” 15310 Athens (Greece)
  2. (Greece)
  3. Department of Physics, National Technical University of Athens, Athens (Greece)
Publication Date:
OSTI Identifier:
22254002
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 21; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CHEMICAL VAPOR DEPOSITION; DATA ANALYSIS; EMISSION SPECTROSCOPY; GRAPHENE; LAYERS; MONOCRYSTALS; POLYCRYSTALS