Figure 6
From: Does the Dirac Cone Exist in Silicene on Metal Substrates?
Isosurfaces of electron density at the Dirac point: (a–c) the π and π* states of free-standing silicene (a) and silicene without (b) and with (c) K atoms and Ag substrate and (d–f) the four mixed π (π*) states of free-standing (√3 × √3) plane silicene (d) and silicene without (e) and with (f) K atoms and Pt substrate. Yellow, purple, silver and green balls are Si, K, Ag and Pt atoms, respectively. The isovalue is 0.02 e/Å3.
