Extended Data Fig. 1: Linear dichroism spectrum.
From: Strain tuning of vestigial three-state Potts nematicity in a correlated antiferromagnet
Linear dichroism signal as a function of incident photon energy for a thin-bulk FePSe3 sample at 5 K. The spectrum shows a broad LD response centered around 2 eV. The photon energy dependent LD response is possibly due to a resonance effect with a d-d electronic transition. Previous measurements on FePS3 showed similar enhancement of LD response at known d-d transitions.
