Cell + Ionic relaxation with Orb v3 conservative inf MPA; 0.03 eV/Å threshold; final energy = -157.1247 eV; energy change = -692.4766 eV; symmetry: Fm-3m → P1
LaH10 in Fm-3m symmetry at 250 GPa, from Belli, Zurek & Errea (npj Comput. Mater. 2026). SB class: QNEs suppress Tc (260 to 220 K).