Electronic Reconstruction across the Tilt-Free Transition in La 3 Ni 2 O 7
Researchers used high-temperature reflectivity and Raman spectroscopy to study La3Ni2O7 as it transitions from a tilted to a tilt-free structure at 544 K. The study found that this structural change causes a major reorganization of electronic spectral weight across a very wide energy range, linking the suppression of octahedral tilts directly to the reconstruction of bilayer Ni 3dz2 electronic states.