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Optical signatures of interlayer electron coherence in a bilayer semiconductor

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Nature Physics, Published online: 20 August 2025; doi:10.1038/s41567-025-02971-0

Condensates of excitons have been observed in the quantum Hall regime, but evidence for their existence at low magnetic fields remains controversial. Now evidence of coherence between optically pumped interlayer excitons in MoS2 marks a step towards confirming exciton condensation at low magnetic fields.