Fractional Chern Insulators with Strong Interactions that Far Exceed Band Gaps
Fractional Chern Insulators with Strong Interactions that Far Exceed Band Gaps
We study two models for spinless fermions featuring topologically nontrivial bands characterized by Chern numbers C=±1 at fractional filling. Using exact diagonalization, we show that, even for infinitely strong nearest-neighbor repulsion, the ground states of these models belong to the recently discovered class of quantum liquids called fractional Chern insulators …