Fig. 2: Thermal transport across Al–sapphire interfaces.
From: Thermal conductance across harmonic-matched epitaxial Al-sapphire heterointerfaces

a Phonon density of states (DOS) of Al and sapphire. b Thermal circuit of Al–sapphire interfaces. c Comparison of temperature-dependent Al–sapphire TBC of samples Sub100 and Sub200 with measured TBC values in the literature: Hopkins I22, Stoner6, and Hopkins II50. d Comparison of measured Al–sapphire TBC with theoretical values calculated by AGF and non-equilibrium Landauer approach. The error bars are calculated by a Monte Carlo method.