Metallization of quasi-two-dimensional Mott insulator CaIrO3 with S = frac(1, 2) spins

K. Ohgushi, T. Yagi, H. Gotou, Y. Kiuchi, Y. Ueda

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We report on three attempts to metallize a S = frac(1, 2) antiferromagnetic Mott insulator CaIrO3 with the quasi-two-dimensional post-perovskite structure. By controlling the dimensionality and the electron filling, we can successfully drive a metal-insulator transition, while an insulating state is robust against the applied pressure. These results are compared with related experiments for the post-perovskite Mg0.9Fe0.1SiO4, the layered perovskite Ca2RuO4, and high-Tc cuprates. The interplay between spin, charge, and orbital degrees of freedom is discussed.

Original languageEnglish
Pages (from-to)3261-3263
Number of pages3
JournalPhysica B: Condensed Matter
Issue number19
Publication statusPublished - 2009 Oct 15


  • CaIrO
  • Low dimensional system
  • Metal-insulator transition
  • Post-perovskite


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