Extended Data Fig. 7: Complex conductivity.
From: Black metal hydrogen above 360 GPa driven by proton quantum fluctuations

Imaginary part of the conductivity at the simulated pressures. Combining these data with the real part if the conductivity reported in Figure 4 of the main text, it is possible to compute the dielectric function and the all the optical properties (reflectivity and transmittance). These data are computed with quantum nuclei using the TB09 functional.