@article{oai:nagoya.repo.nii.ac.jp:00009517,
 author = {Ishida, Yukiaki and Eguchi, Ritsuko and Matsunami, Masaharu and Horiba, Koji and Taguchi, Munetaka and Chainani, Ashish and Senba, Yasunori and Ohashi, Haruhiko and Ohta, Hiromichi and Shin, Shik},
 issue = {5},
 journal = {PHYSICAL REVIEW LETTERS},
 month = {Feb},
 note = {Resonant photoemission at the Ti 2p and O 1s edges on a Nb-doped SrTiO3 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 ～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.},
 pages = {056401--056401},
 title = {Coherent and Incoherent Excitations of Electron-Doped SrTiO_3},
 volume = {100},
 year = {2008}
}