Extended Data Fig. 1: Optical absorption spectrum of NiI2 at 5 K.
From: Giant chiral magnetoelectric oscillations in a van der Waals multiferroic
Light attenuation coefficient as a function of photon energy. A set of d−d transitions and exciton states emerge across the near-infrared spectral range. The vertical bars denote the photon energies used in our pump (ħωpump = 1.13 eV) and probe (ħωprobe = 1.20 eV) experiment. Data is adapted from ref. 52.
