Figure 1: ARPES analysis of twisted graphene.
From: Observation of the intrinsic bandgap behaviour in as-grown epitaxial twisted graphene

The constant energy map at the Fermi energy from ARPES measurements for (a) template graphene and (b) graphene grown by C60 deposition, measured with photons of 50 eV. The template graphene shows point-like Fermi surfaces at each corner of the first Brillouin zone (BZ) of graphene denoted by black-dashed lines. The graphene grown by C60 deposition shows an additional honeycomb shape denoted by blue-dashed lines, which is rotated by ~30 degrees with respect to that of template graphene.