Result of · via Calculate phonon dispersion and band structure
SnP₃ (R-3m, bulk) — COD 1527463 [NOT the 2D monolayer]
Phonon band structure with Orb v3 conservative inf MPA (supercell [3, 3, 3], Δ=0.01 Å); no imaginary modes; min freq = -0.00 THz