Fermi surface and low-energy electronic structure of graphene grown on Cu/Ni (111) film. (a) ARPES Fermi surface intensity plot at the Fermi level. The redundant intensity apart from the K ( K ′ ) point was contributed by the substrate. The red-solid lines represent the first Brillouin zone. (b) ARPES intensity plot along the Γ–K– K ′ direction. (c) The Dirac-like band dispersion at the K point. (d) MDC plots of the Dirac-like dispersion. The black-dashed lines indicate the linear dispersions. (e) The MDC# indicated in panel (d) is fitted by two Lorentzian functions and one constant term. (f) EDC at the center of the K point.