Figure 5
From: Does the Dirac Cone Exist in Silicene on Metal Substrates?
(a) Band structure of epitaxial (√3×√3) silicene with the intercalated K atoms and the Pt substrate removed. (b–d) Band structures of epitaxial silicene on Pt, Al and Au substrates with K atoms intercalation. The Fermi level is set to zero. The green, blue and magenta colors in (a) indicate the states contributed by s, px and py and pz orbitals of the Si atoms respectively and the red color in (b–d) indicates the states contributed by the Si atoms. The thickness of these colors is proportional to the Si atom character. The Dirac point is folded to the Γ point and indicated by a square.
