Figure 6
From: Second order topology in a band engineered Chern insulator
The Chern number is perfectly quantized at 1 for \(\xi <2\), which is the TI phase. For \(\xi >2\), the Chern number goes to 0. This indicates vanishing of the edge modes in the system which is evident from the bandstructure plots (Fig. 4) as well. The parameters t, \(t_2\), \(\phi \) and m are fixed at 1, 0.1, \(\frac{\pi }{2}\) and 0, respectively.
