Figure 3. Bulk and surface electronic states of MoTe₂ probed by photon energy-dependent ARPES measurements.

(a) The photoemission spectral intensity map in k_y–k_z plane, where the red arrows indicate the surface states (marked as SS) that show no dispersion along the k_z direction. Red curves indicate the k_z locations of different photon energies. (b–i) Fermi surfaces measured under different photon energies as indicated in a. Red dashed rectangles and arrows highlight the position of the surface states that do not change shape with the photon energies. (j) Calculated Fermi surface with black dashed rectangles highlighting the same area as in b–i indicating clear surface states inside.