Impurities in a flat Chern band induce a thermal crossover from fractional to integer Chern insulators via entropy-energy competition, supported by exact diagonalization in a toy model.
These parameters ensure that the bottom band becomes very flat with a Chern number of1
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Impurity-induced thermal crossover in fractional Chern insulators
Impurities in a flat Chern band induce a thermal crossover from fractional to integer Chern insulators via entropy-energy competition, supported by exact diagonalization in a toy model.