Research on correlated electronic properties of iridium oxides

• Project/Area Number: 20740211
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: OHGUSHI Kenya The University of Tokyo, 物性研究所, 特任講師 (30455331)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: 強相関系 / イリジウム / 電子相関 / 遷移金属酸化物 / 磁気構造 / 放射光磁気回折 / 層状構造 / ポストペロブスカイト / ATS散乱 / パイロクロア

Research Abstract

CaIrO_3 with the post-perovskite structure undergoes the antiferromagnetic transition at 115 K. We have revealed the magnetic structure of the low temperature phase by utilizing the resonant x-ray scattering. We also clarified that the orbital state is strongly influenced by the spin-orbit coupling.

Research Products

• [Journal Article] Metallization of quasi-two-dimensional Mott insulator CaIrO3 with S=1/2 spins (2009)
  • Author(s): K. Ohgushi, T. Yagi, H. Gotou, Y. Kiuchi, Y. Ueda
  • Journal Title: Physica B 404 Pages: 3261-3261
  • Peer Reviewed
• [Journal Article] ポストペロブスカイトアナログ物質の探索および物性研究 (2008)
  • Author(s): 大串研也
  • Journal Title: 高圧力の科学と技術 18 Pages: 237-237
  • NAID: 10024273671
  • Peer Reviewed
• [Presentation] Correlated Electronic Properties of Post-Perovskite-type Iridium Oxides (2009)
  • Author(s): Kenya Ohgushi
  • Organizer: 22nd International Conference on High Pressure Science and Technology
  • Place of Presentation: Odaiba, Tokyo, Japan
  • Year and Date: 2009-07-31
• [Presentation] Broken Inversion Symmetry on the Pyrochlore Lattice (2009)
  • Author(s): Kenya Ohgushi
  • Organizer: 8th Asia-Pacific Workshop
  • Place of Presentation: Yonsei university Seoul, Korea
  • Year and Date: 2009-07-05
• [Presentation] 放射光磁気回折を用いたCaIrO3の磁気構造の研究 (2009)
  • Author(s): 大串研也, 大隅寛幸, 杉本邦久, 山浦淳一, 片山尚幸, 有馬孝尚, 高木英典
  • Organizer: 日本物理学会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-27
• [Presentation] 放射光磁気回折を用いたCaIrO_3の磁気構造の研究 (2009)
  • Author(s): 大串研也, 大隅寛幸, 杉本邦久, 山浦淳一, 片山尚幸, 有馬孝尚, 高木英典
  • Organizer: 日本物理学会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-27
• [Presentation] パイロクロア型酸化物における反転対称性の破れ (2008)
  • Author(s): 大串研也, 市原正樹, 木内陽子, 松下能孝, 山本文子, 高木英典
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-22
• [Remarks]
  • URL: http://ohgushi.issp.u-tokyo.ac.jp/