Phonon band structure (supercell [2, 2, 2], Δ=0.01 Å); imaginary modes detected; min freq = -15.56 THz
Relaxed with Orb v3; 0.03 eV/Å threshold; final energy = -58.1915 eV; energy change = -3.8872 eV; symmetry: Pmmm → Pmmm
