Is graphene the best heat conductor? Researchers investigate with four-phonon scattering
Spectral and mode contribution. (a) Spectral contributions to κ of graphene at room temperature without boundary scattering. The inset shows the cumulative thermal conductivity as a function of phonon frequency. (b) ZA phonons’ contribution to κ and its percentage at room temperature, and comparison to first principles at 3ph (renorm. stands for phonon renormalization that was not included before) [9] and MD work [29]. In both plots, the 3ph case presented here is calculated at N=180 without boundary scattering, and…
