Figure 6
From: Low Lattice Thermal Conductivity of a Two-Dimensional Phosphorene Oxide

Allowed mode-dependent phase spaces P3(ωj(q)) of three-phonon scattering processes evaluated in (a) phosphorene and (b) PO for three acoustic modes ZA (purple), TA (green), LA (blue) and all the other modes (black). P3 values are given in a logarithmic scale.