Spectroscopic studies of the electrical structure of transition metal and rare earth complex oxides

Spectroscopic studies of transition metal (Tm) and rare earth (Re) oxides, combined with ab initio theory identify the band edge electronic structure of high-K dielectrics. The lowest conduction band states are derived from anti-bonding Tm (Re) View the MathML source-states. A novel method for obtaining independent control of band gap energies and dielectric constants in complex oxides, ReTmO3, results from coupling of Tm and Re atom d-states bonded to the same oxygen atom.