A toy model of KV3Sb5 with a hand-chosen momentum-dependent hopping phase yields two bands with opposite Chern numbers, but the total Hall conductance is not shown to be quantized.
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Theoretical investigation of Quantum Anomalous Hall Effect in Potassium Tri-vanadium Pentantimonide
A toy model of KV3Sb5 with a hand-chosen momentum-dependent hopping phase yields two bands with opposite Chern numbers, but the total Hall conductance is not shown to be quantized.