Topological Anderson insulator in two-dimensional non-Hermitian systems
Liu Hongfang1, Su Zixian1, Zhang Zhi-Qiang1, †, Jiang Hua1, 2, ‡
       

(a), (b) Chern number evolutions with m for H under the condition of open boundary (N = 20,30,40) and for Heff under the condition of periodic boundary with N = 40, respectively. Panel (b) is zoom of (a) near the transition point. Other parameters are γ = 0.4, v = 1, and t = 1. In all the Chern number calculations, we fix the Fermi energy at EF = 0.