Charge-transfer excitons on a honeycomb lattice form an emergent Kagome manifold whose flat band becomes topological under time-reversal breaking, independent of the electron and hole band topology.
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Topological Charge-Transfer Excitons
Charge-transfer excitons on a honeycomb lattice form an emergent Kagome manifold whose flat band becomes topological under time-reversal breaking, independent of the electron and hole band topology.