Circularly polarized light between two opposite-chirality flat bands in a proposed Yin-Yang Kagome lattice would produce a quantized Hall response with its sign set by the light handedness.
(b) The quantized spin Hall conductivity ( σ s xy) within the energy window of the SOC gaps
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Excited quantum Hall effect: enantiomorphic flat bands in a Yin-Yang Kagome lattice
Circularly polarized light between two opposite-chirality flat bands in a proposed Yin-Yang Kagome lattice would produce a quantized Hall response with its sign set by the light handedness.