Ti 2p soft X-ray emission spectroscopy of Ti2O3

Ti 3d electronic structure of Ti2O3 has been investigated by means of soft X-ray photoemission spectroscopy (SXES) in the Ti 2p-3d absorption region. In the SXES spectra, the Raman peaks due to the a1g-egπ and a1g-egσ excitations are observed at 1.3 and 3.3 eV below the incident photon energy, respectively. The intensity of the a1g-egσ peak in the SXES spectrum measured between the 2p3/2-3d and 2p1/2-3d absorption peaks depends on the polarization of the incident photon E; the peak observed clearly in case of E parallel to the c-axis, almost disappears in case of E perpendicular to the c-axis.