Figure 4

In-plane angle-resolved photoemission measurements. (a) The Γ-K-L-K-X plane. The band dispersion along X-K and Γ-K symmetry lines are measured at the photon energies of 70 and 118 eV, respectively. Conduction band features were measured at the photon energy of 30 eV. (b) The Γ-X-W-L plane. The band dispersions along X-W and Γ-X symmetry lines are measured at the photon energies of 70 and 118 eV. (c) The intensity plot of the second derivative EDC in E-k space. (d) The calculated band dispersions have been reproduced from ref.16.