T. Higuchi et al., Crystal-field splitting and the on-site Coulomb energy of LaxSr1-xTiO3 from resonant soft-x-ray emission spectroscopy, PHYS REV B, 60(11), 1999, pp. 7711-7714
Resonant soft-x-ray emission spectroscopy was measured on LaxSr1-xTiO3 (x =
0, 0.05, 0.10) in the Ti 2p energy region. At the Raman scattering of the
e(g) resonance, the d-d transition whose Raman shift has an energy value of
about 2.3 eV corresponds to the crystal-field splitting. On the other hand
, at the t(2g) resonance, the d-d transition whose Raman shift is about 2.2
eV is thought to be the transition reflecting half intra-atomic Coulomb en
ergy. [S0163-1829(99)01232-1].