Figure 4
From: A new kind of 2D topological insulators BiCN with a giant gap and its substrate effects
Optimized atomic structures of four composite systems with top view (top panel) and side view (bottom panel).
(a) 
BiCN on 4 × 4 h-BN with lattice mismatch of −4.5% and interlayer distance of 3.01 Å (b) 1 × 1 BiCN on 
MoS2 with lattice mismatch of 0.6% and interlayer distance of 2.85 Å (c) 
β–BiCN on 4 × 4 with lattice mismatch of 0.5% and interlayer distance of 3.48 Å (d) 1 × 1 β–BiCN on 
MoS2 with lattice mismatch of −4.8% and interlayer distance of 3.23 Å.
