Related Experiment Video
Updated: Jul 6, 2026

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
Published on: August 15, 2015
Coherent and Incoherent Excitations of Electron-Doped SrTiO3
Yukiaki Ishida1, Ritsuko Eguchi, Masaharu Matsunami
1RIKEN SPring-8 Center, Sayo, Sayo, Hyogo 679-5148, Japan.
Abstract:
Resonant photoemission at the Ti 2p and O 1s edges on a Nb-doped SrTiO(3) thin film revealed that the coherent state (CS) at the Fermi level (E(F)) had a mainly Ti 3d character whereas the incoherent in-gap state (IGS) positioned approximately 1.5 eV below E(F) had a mixed character of Ti 3d and O 2p states. This indicates that the IGS is formed by a spectral-weight transfer from the CS and subsequent spectral-weight redistribution through d-p hybridization. We discuss the evolution of the excitation spectrum with 3d band filling and rationalize the IGS through a mechanism similar to that proposed by Haldane and Anderson.
Related Concept Videos
π Electron Effects on Chemical Shift: Overview
IR Absorption Frequency: Delocalization
In IR spectroscopy,...
Lattice Energies of Ionic Crystals
Imperfections in Crystal Structure: Stoichiometric Point Defects
Molecular and Ionic Solids
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
π Electron Effects on Chemical Shift: Aromatic and Antiaromatic Compounds

