Ca1-xNaxIrO3 as a novel quasi-two-dimensional Mott transition system

Kenya Ohgushi, Hirotada Gotou, Takehiko Yagi, Yoko Kiuchi, Fumiko Sakai, Yutaka Ueda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We have successfully synthesized Ca1-xNaxIrO3 with the post-perovskite structure and elucidated their electronic properties. CaIrO3 is a S = 1/2 antiferromagnetic Mott insulator with the Néel temperature (TN) of 115 K. A gradual decrease in TN upon carrier doping culminates in a paramagnetic state at x ∼ 0.3 with the simultaneous change from an insulator to a metal. The metallic state for x ≥ 0.31 shows the non-Fermi liquid behavior originating from antiferromagnetic fluctuations.

Original languageEnglish
Pages (from-to)534-535
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume460-462 I
Issue numberSPEC. ISS.
Publication statusPublished - 2007 Sep 1
Externally publishedYes


  • CaIrO
  • Metal-insulator transition
  • Post-perovskite structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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