Extended Data Fig. 2: Photon energy dependence of the Fermi arcs.

a, Energy distribution curves (EDC) across the Fermi arc as a function of photon energy (upper panel), EDC across the Fermi arc measured with 5.9 eV laser (middle panel), theoretical EDC for fully integrated bulk (lower panel). b, Theoretical calculation for bulk (left) and bulk with surface (right) in ΓM direction.