Fig. 1: Electronic properties of 2D Gold.

a ARPES cut along the diagonal orange line in panel c, showing only the Au bands dispersion. In the right panel the spectrum cuts along the short orange line in panel c. The orange dashed lines superimposed to the data are the TB bands as described in the text. b Au bands dispersion along the ky direction highlighting their spin-orbit splitting ΔSO. The photon energy for panels a and b is 95 eV. c Fermi surface of the system measured by ARPES. The figure is the result of the sixfold symmetrisation of a measurement. Scale-bar corresponding to 0.5 Å−1. d Normalized line profiles extracted along the graphene π-band and the \(\overline{\mathrm{K}}_{{\mathrm{Au}}}\) point (cf. Supplementary Fig. 1). e Dispersion measured along ky at the \(\overline{\mathrm{K}}_{{\mathrm{Gr}}}\) point with 40 eV photons, showing graphene’s Dirac cone.