Figure 5. Atomic structures (upper) and local density of states (LDOS, lower) of C₂₄@Ag(111) (left) and Si₂₄@Ag(111) (right) systems.

The LDOS comes from the central six carbon atoms (2p orbital) or silicon atoms (3p orbital) highlighted by red balls as well as the Ag atoms (4d orbital) highlighted by green ball right underneath the C or Si hexagon. Two characteristic bond angles (α, β) for central Si₆ hexagon are labeled: α = 120° – 121°, β = 115° – 118°.