Figure 2: Experimental and calculated in-plane band structure.
From: Observation of a topologically non-trivial surface state in half-Heusler PtLuSb (001) thin films
In-plane constant photon energy ARPES dispersion maps and corresponding constant kz calculated bulk band structure projections (red) with overlaid extracted surface state positions (blue and green) along the 
direction for incident photon energies of (a–f) 14–19 eV, respectively. The maps highlight the presence of two surfaces states, which do not disperse as a function of changing kz, unlike the bulk bands. The theory calculation Fermi level has been shifted −0.35 eV to align with the experimental Fermi level position. Error bars correspond to 1 s.d. for Voigt peak fits.
