TY - JOUR
T1 - Electronic structure of Mott-Hubbard-type transition-metal oxides
AU - Fujimori, A.
AU - Yoshida, T.
AU - Okazaki, K.
AU - Tsujioka, T.
AU - Kobayashi, K.
AU - Mizokawa, T.
AU - Onoda, M.
AU - Katsufuji, T.
AU - Taguchi, Y.
AU - Tokura, Y.
N1 - Funding Information:
The authors would like to thank I.H. Inoue, Y. Ueda, T. Tohyama, S. Maekawa, M. Imada, G. Kotliar and D.D. Sarma for collaboration and discussion. This work was supported by a Grant-in-Aid for Scientific Research in the Priority Area “Novel Quantum Phenomena in Transition Metal Oxides” from the Ministry of Education, Science, Sports and Culture and the Special Coordination Fund for the Promotion of Science and Technology from the Science and Technology Agency.
PY - 2001/6
Y1 - 2001/6
N2 - Oxides of Ti and V belong to the Mott-Hubbard regime of the Zaanen-Sawatzky-Allen classification scheme of transition-metal compounds and have simple electronic structures which allow us to study the effect of electron correlation in a transparent way. In this article, we make an overview of our recent photoemission studies on Ti and V oxides, with special emphasis on metal-insulator transitions induced by the control of the width and the filling of the Ti and V 3d bands. Spectroscopic data yield spectral weight transfer between the coherent and incoherent parts of the d band, the spectral intensities at the Fermi level and the chemical potential shifts as functions of band filling. We show that such spectroscopic information well corresponds to the thermodynamic and transport properties and is necessary to understand electron correlation phenomena from a fundamental viewpoint.
AB - Oxides of Ti and V belong to the Mott-Hubbard regime of the Zaanen-Sawatzky-Allen classification scheme of transition-metal compounds and have simple electronic structures which allow us to study the effect of electron correlation in a transparent way. In this article, we make an overview of our recent photoemission studies on Ti and V oxides, with special emphasis on metal-insulator transitions induced by the control of the width and the filling of the Ti and V 3d bands. Spectroscopic data yield spectral weight transfer between the coherent and incoherent parts of the d band, the spectral intensities at the Fermi level and the chemical potential shifts as functions of band filling. We show that such spectroscopic information well corresponds to the thermodynamic and transport properties and is necessary to understand electron correlation phenomena from a fundamental viewpoint.
KW - Chemical potential shift
KW - Hubbard bands
KW - Mott transition
KW - Spectral weight transfer
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U2 - 10.1016/S0368-2048(01)00253-5
DO - 10.1016/S0368-2048(01)00253-5
M3 - Article
AN - SCOPUS:0035366728
SN - 0368-2048
VL - 117-118
SP - 277
EP - 286
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
ER -