Photoemission spectroscopy of correlated transition-metal compounds in the charge-transfer regime

A. Fujimori, K. Mamiya, Takashi Mizokawa

Research output: Contribution to journalArticle

Abstract

An overview is given on the effects of strong d-d Coulomb repulsion on the electronic structure of charge-transfer (CT)-type 3d transition-metal (TM) compounds, especially of 3d TM chalcogenides. Mean-field effects determine the ground-state properties of the system including magnetic and orbital ordering whereas correlation effects are necessary to correctly describe excitation properties such as photoemission spectral weight distribution. Because of the strong d-d repulsion even in the metallic state of CT-type compounds, the overall photoemission spectral line shapes remain relatively unchanged across metal-insulator transitions. In the vicinity of the Fermi level, high-resolution photoemission spectra exhibit unusual line shapes and spectral weight transfer, which implies strong renormalization of quasi-particles due to electron correlation.

Original languageEnglish
Pages (from-to)137-141
Number of pages5
JournalPhysica B: Condensed Matter
Volume237-238
Publication statusPublished - 1997 Jul
Externally publishedYes

Fingerprint

Transition metal compounds
metal compounds
Photoemission
Photoelectron spectroscopy
Charge transfer
photoelectric emission
transition metals
charge transfer
line shape
spectroscopy
Electron correlations
Chalcogenides
Metal insulator transition
chalcogenides
elementary excitations
Fermi level
Ground state
Electronic structure
Transition metals
line spectra

Keywords

  • Electron correlation
  • NiS
  • NiS
  • Photoemission spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Photoemission spectroscopy of correlated transition-metal compounds in the charge-transfer regime. / Fujimori, A.; Mamiya, K.; Mizokawa, Takashi.

In: Physica B: Condensed Matter, Vol. 237-238, 07.1997, p. 137-141.

Research output: Contribution to journalArticle

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