Figure 2
From: Fermi velocity engineering in graphene by substrate modification
Experimental and theoretical energy spectra for different dielectric constants.
(A) Experimental dispersions for graphene on SiC(000-1) (blue line), BN (dark-yellow line) and quartz (red line). The gray-dashed lines are guides to the eyes. The insets are cartoons for the electron band structure of graphene with weak (left) and strong (right) electron-electron interactions. The data are shifted along the x-axis. (B) The direct comparison of experimental dispersions with theories: ε = ∞ (magenta line)4 and ε = 1 (cyan line)12.
