Strongly correlated metallic state of LaNio3: 139La NMR study

Akihiro Sakai, Guo Qing Zheng, Yoshio Kitaoka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

LaNiO3 is a transition-metal oxide with Perovskite crystal structure where Ni is in the low spin state of t62e 1g. It is a metal and shows enhanced susceptibility χ with a strong temperature (T) dependence at low T. We have carried out a 139 La NMR study in the poly crystal sample in the temperature range between 1.4 K and 300 K. We find that the uniform spin susceptibility is T-independent which suggests that the low-T upturn in χ is an extrinsic property of the metallic state. The results of the Knight shift and the nuclear spin relaxation rate indicate that the spin susceptibility is almost wave-vector (q) independent, implying that the electron correlation is dominantly due to a band narrowing, mass enhancement, effect near a metal-insulator transition, rather than to a ferromagnetic interaction peaked at q=O.

Original languageEnglish
Pages (from-to)166-168
Number of pages3
Journaljournal of the physical society of japan
Volume71
Issue numberSUPPL.
DOIs
Publication statusPublished - 2002
Externally publishedYes

Keywords

  • LaNI0
  • Mass enhancement
  • NMR
  • Strong correlation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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