Figure 3. Thermal conductivity vs. temperature as compared to other models and experiments.

The red curve is the temperature dependent TC of a-SiO₂ from GKMA calculations with error bars showing the standard deviation between independent simulations, experimental results (black circles) is from ref. 27, AF bks is Allen-Feldman theory prediction from reference²⁷ using Beest-Kramer–van Santen (BKS) potential³⁸,³⁹, AF tersoff is A-F theory prediction using Tersoff potential, the Yu & Leitner results were obtained from ref. 40, where they used the wave-packet method to calculate the mode diffusivity under the harmonic approximation, MD₁ is a non-equilibrium molecular dynamics simulation result from Shenogin et al.²⁷, MD₂ is the MD result with quantum corrections from Jund and Jullien⁴¹, the solid blue curve represents the locon contribution to the TC and the dashed blue curve is the sum of all other delocalized mode contributions.