3 papers
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
We report neutron powder diffraction measurements and path-integral molecular dynamics simulations of stacking-disorder-free cubic ice I, produced by topotactic degassing of C2…
cond-mat.mtrl-sci2025
Dual quantum locking: Dynamic coupling of hydrogen and water sublattices in hydrogen filled ice
Loan Renaud, Tomasz Poreba, Simone Di Cataldo +7
Hydrogen hydrates (HH) are a unique class of materials composed of hydrogen molecules confined within crystalline water frameworks. Among their multiple phases, the filled ice stru…
cond-mat.mtrl-sci2025
Discovery of a low-density filled-ice phase in nitrogen hydrate at high pressure
Selene Berni, Sophie Espert, Tomasz Poreba +7
We map the high-pressure phase diagram of nitrogen hydrate up to 16 GPa at room temperature by combining neutron diffraction, Raman spectroscopy, and crystal structure prediction.…