A simplified real-space Chern number via supercell Wilson loops is shown to be integer-quantized and is used to demonstrate that polarized disorder preserves topology while uniform disorder drives a phase transition in an extended Rice-Mele model.
Toniolo, On the Bott index of unitary matrices on a finite torus, Lett
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Real-space formulation of the Chern invariant and topological phases in a disordered Chern insulator
A simplified real-space Chern number via supercell Wilson loops is shown to be integer-quantized and is used to demonstrate that polarized disorder preserves topology while uniform disorder drives a phase transition in an extended Rice-Mele model.