Figure 3: Photon energy-dependent ARPES dispersion maps.
From: Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd
The measured photon energies are noted on the plots. The linearly dispersive states at a binding energy of ∼700 meV do not show any dispersion with photon energy, which indicate its two-dimensional nature. These data were collected along 
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high-symmetry direction at ALS BL 10.0.1 at a temperature of 10 K. Additional photon energy data are presented in Supplementary Information.
