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cubic ice 1hydrogen-bond network 1negative thermal expansion 1neutron diffraction 1nuclear quantum effects 1path-integral molecular dynamics 1

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cond-mat.mtrl-sci2026

Negative Thermal Expansion in Cubic Ice: A Collective Quantum Effect of the hydrogen-bond network

Loan Renaud, Tomasz Poreba, Richard Gaal +3

The paper investigates why cubic ice I₍c₎ contracts when heated, showing that its negative thermal expansion arises from collective quantum behavior of the hydrogen‑bond network, c…