Electron-phonon coupling in d-electron solids: A temperature-dependent study of rutile TiO2 by first-principles theory and two-photon photoemission

The authors present experimental and theoretical results on the electron-phonon interaction in TiO2 and SiO2 and show that the different behavior can be attributed to the split of the degeneracy of atomic orbitals induced by the crystal field of the ligand species.