118 citations · 430 across the 14 of their papers we have counts for
3 papers · 2 filters
Low-temperature anharmonicity of barium titanate: a path-integral molecular dynamics study
Gregory Geneste, Hichem Dammak, Marc Hayoun +1
We investigate the influence of quantum effects on the dielectric and piezoelectric properties of barium titanate in its (low-temperature) rhombohedral phase, and show the strongly…
Strong Isotopic Effect in Phase II of Dense Solid Hydrogen and Deuterium
Grégory Geneste, Marc Torrent, François Bottin +1
Quantum nuclear zero-point motions in solid H and D under pressure are investigated at 80 K up to 160 GPa by first-principles path-integral molecular dynamics calculations.…
Surface phase transitions in BiFeO3 below room temperature
R. Jarrier, X. Marti, J. Herrero-Albillos +15
We combine a wide variety of experimental techniques to analyze two heretofore mysterious phase transitions in multiferroic bismuth ferrite at low temperature. Raman spectroscopy,…