Figure 3
From: Quantum anomalous Hall and quantum spin-Hall phases in flattened Bi and Sb bilayers
Electronic properties of chemically modified bilayer system.
Calculated Dirac-cone band structures of (a) bismuthane and (b) anitmonane near the Fermi level without SOC (left) and with SOC (right). (c) The energy gaps at Γ or K(K') point for pristine or hydrogenated Bi and Sb (111) bilayers upon varying the spin-orbit coupling strength in first-principles calculations from zero to the true value set as 1. (d) Wannier orbitals constructed from the Dirac states near the Fermi level. Bi py (px) orbitals represented at A (B) site of the hexagonal lattice. The sign of the wave function is represented in purple (+) or yellow (−) color.
