Fig. 6: Comparison of the full band model with the effective two-band model.
From: Films of rhombohedral graphite as two-dimensional topological semimetals
a Low-energy dispersion \(\epsilon ({p}_{x},0)\) for \(B=0\) and \(\Delta =0\). b Landau level spectrum as a function of perpendicular magnetic field \({B}_{z}\) for \(\Delta =0\). c Low-energy dispersion \(\epsilon ({p}_{x},0)\) for \(B=0\) and \(\Delta =40\ {\rm{meV}}\). In c we indicate the threshold \(\hslash {\omega }_{* }\) for photo-absorption which appears to be lower than \(\Delta\) when calculated in the multi-band model (similarly to bilayer graphene27).
