Phonon band structure (supercell [2, 2, 2], Δ=0.01 Å); imaginary modes detected; min freq = -0.84 THz
Relaxed with Orb v3; 0.03 eV/Å threshold; final energy = -21.8449 eV; energy change = -0.0961 eV; symmetry: P3m1 → P-6m2
