Figure 3
From: Understanding the origin of band gap formation in graphene on metals: graphene on Cu/Ir(111)
Analysis of the electronic structure of graphene/Cu/Ir(111).
(Upper panel) Comparison of the the experimental and calculated electronic structure of graphene/Cu/Ir(111) and graphene/Cu(111), respectively, in the energy and k-vector ranges where hybridization of graphene π and Cu 3d states is observed. (Lower panel) Orbital character decomposition of the valence band states of graphene in the vicinity of the Dirac point. See Fig. 1(e) and Fig. S1 in the supplementary material with the corresponding text for the definitions of the respective position of the carbon atoms.
