Spectral Weight Transfer and Mass Renormalization in Correlated d-Electron Systems

  • A. Fujimori
  • K. Morikawa
  • T. Mizokawa
  • T. Saitoh
  • M. Nakamura
  • Y. Tokura
  • I. Hase
  • I. H. Inoue
Conference paper
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 119)

Abstract

Effects of electron correlation on the photoemission spectra of 3d transition-metal compounds are viewed as the self-energy correction to the Hartree-Fock or local-density approximation. On the metallic side of the Mott transition, as one approaches the transition in Ti and V oxides, gradual transfer of spectral weight occurs from the coherent to the incoherent part of the spectral function, i.e., from the quasi-particle bands to the Hubbard bands; significant non-local contribution to the self-energy is found and discussed in relation to the mass enhancement towards the Mott transition. On the insulating side of the transition, the band edges of a Mott insulator NiS and of a Kondo insulator FeSi are found to be considerably narrowed due to correlation effects.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • A. Fujimori
    • 1
  • K. Morikawa
    • 1
  • T. Mizokawa
    • 1
  • T. Saitoh
    • 1
  • M. Nakamura
    • 1
  • Y. Tokura
    • 1
  • I. Hase
    • 2
  • I. H. Inoue
    • 2
  1. 1.Department of PhysicsUniversity of TokyoTokyo 113Japan
  2. 2.Electrotechnical LaboratoryUmezono, Tsukuba 305Japan

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