Table 1 Low-energy electronic excitations probed by different spectroscopies and their assignments.
From: Multiple spin-orbit excitons in α-RuCl3 from bulk to atomically thin layers
A0 | A1 | A2 | A3 | |
|---|---|---|---|---|
RIXS34 | – | 231±3 meV/SO exciton | 524±10 meV (Cl 3p → Ru 4d charge-transfer excitations) | 745±10 meV (Cl 3p → Ru 4d charge-transfer excitations) |
Optical spectroscopy35 | – | 270 meV/phonon-assisted SO exciton | 530 meV/phonon-assisted double SO exciton | 750 meV/direct triple SO exciton |
131, 145, 151 meV/ SO exciton vs. multi-phonons | 235–248 meV/SO exciton | 450 meV | – | |
Present Raman | 142, 151 multi-phonons | 249 meV/SO exciton | 454 meV/double SO exciton | – |
