Extended Data Fig. 1: Thermal broadening comparison.
From: Superheating gold beyond the predicted entropy catastrophe threshold
Comparison of thermal broadening predicted by the multi-phonon scattering calculation (red) and Eq. (1) (blue). The two approaches show excellent agreement above 2000 K, supporting the use of the simpler formulation at high temperatures. The inset shows the ratio of the two methods, demonstrating convergence in this regime. The circles represent temperatures measured in this work that exceed the originally proposed entropy catastrophe threshold (3Tm). The difference between the two approaches for the highest temperatures is less than 1%.
