Phonon band structure (supercell [2, 2, 2], Δ=0.01 Å); no imaginary modes; min freq = -0.21 THz
Relaxed with Orb v3; 0.03 eV/Å threshold; final energy = -55.6330 eV; energy change = -0.4884 eV; symmetry: Cm → Cm
