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Science & ResearchAug 5, 2026

Direct Evidence for Robust Bulk Band Gap Across the Charge Density Wave Transition in TiSe2

The mechanism driving the charge density wave (CDW) transition in TiSe2 has been debated for decades, with proposals ranging from an excitonic insulator to a lattice-driven instability.

The mechanism driving the charge density wave (CDW) transition in TiSe2 has been debated for decades, with proposals ranging from an excitonic insulator to a lattice-driven instability. A central question remains whether the transition involves an opening or enhancement of the…

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