Fig. 3: Vibrational (lattice) contribution to the thermal conductivity as a function of temperature.

Quasiharmonic (QHA, dashed red), quasiparticle (full red), and results without thermal expansion (dotted green) are compared against experiment^66,67 (circles and triangles) and with the results reported by Kwon et al.⁴⁹ using PBEsol (purple dashed).