Crossover in the nature of the metallic phases in the perovskite-type (formula presented)

J. A. Alonso, K. Okazaki, T. Mizokawa, A. Fujimori, E. V. Sampathkumaran, M. J. Martinez-Lope

研究成果: Article査読


We have measured the photoemission spectra of (formula presented) where the metal-insulator transition and the Néel ordering occur at the same temperature for (formula presented) and the metal-insulator transition temperature (formula presented) is higher than the Néel temperature for (formula presented) For (formula presented) the spectral intensity at the Fermi level is high in the metallic phase above (formula presented) and gradually decreases with cooling in the insulating phase below (formula presented) while for (formula presented) it shows a pseudogaplike behavior above (formula presented) and further diminishes below (formula presented) The results clearly establish that there is a change in the nature of the electronic correlations in the middle (formula presented) of the metallic phase of the (formula presented) system.

ジャーナルPhysical Review B - Condensed Matter and Materials Physics
出版ステータスPublished - 2003 2月 6

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学


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