A. Krol, C.J. Sher, et al.
Surface Science
Paper
Valence-band splitting of SrTiO3
Abstract
Optical charge-transfer transitions from the oxygen valence bands to Fe5+ and V5+ impurity states at Ti4+ sites in SrTiO3 reveal a 0.42-eV valence-band splitting. Since these transitions are observed with conventional optical-absorption spectroscopy, their resolution is far better than previously obtained by photoelectron spectroscopy. © 1983 The American Physical Society.
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