Time-resolved optical spectroscopy on La3Ni2O7 reveals two high-energy excitations with density-wave gaps of 54 meV and 67 meV, relaxation via the Rothwarf-Taylor model, and four coherent phonons with distinct electronic couplings and softening behavior.
Luo et al., Microscopic evidence of charge- and spin-density waves in La3Ni2O7–δ revealed by 139La-NQR, Chin
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High-energy electronic excitations in La3Ni2O7 by time-resolved optical spectroscopy
Time-resolved optical spectroscopy on La3Ni2O7 reveals two high-energy excitations with density-wave gaps of 54 meV and 67 meV, relaxation via the Rothwarf-Taylor model, and four coherent phonons with distinct electronic couplings and softening behavior.