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Fig. 4


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(a) Energy spectrum as a function of LA. The LB is fixed at LB = 1.9. (b)–(d) The local Chern number curves for the three cases: (b) LA = 2, LB = 1.9, (c) LA = 2.3, LB = 1.9, (d) LA = 2.3 + δ, LB = 1.9 + δ.

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