Fig. 1: Optical properties of plasmonic HfTa4C5.
a Real (ϵr, dark gray) and imaginary (ϵi, light purple) part of the complex dielectric function. E0 and Ep indicate the crossover energy and the plasmon energy, respectively. Inset zooms on low-energy range of the spectrum. b Simulated electron-energy loss spectrum (EELS) calculated by assuming two sets of structures with 10 (black) or 20 (cyan) atoms per POCC cell at T = 0 K. Simulated EELS of TaC crystal (light gray) is included in inset for comparison. c Comparison between simulated (dark gray) and experimental (green) EELS spectra. Inset zooms on low-energy range of the spectrum. Source data are provided as a Source Data file.
