Anderson localization and topological transition in Chern insulators

Abstract

We analyse the topological transition and localization evolution of disordered two dimensional systems with non trivial topology based on bipartite lattices. Chern insulators with broken time reversal symmetry show non standard behavior for disorder realizations selectively distributed on only one of the sublattices. The Chern number survives to a much stronger disorder strength (one order of magnitude higher) than in the equally distributed disordered case and the final state in the strongly disordered case is metallic.

Minor changes. Published version

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• Probing Electron Localization and Delocalization in the Selective Long-Range Tight-Binding Model
• Robust band of critical states in T broken fermionic systems with lattice selective disorder
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