Studies of crystal growth of organic conductors by high-pressure electrochemical oxidation

• Project/Area Number: 24654098
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Saitama University
• Principal Investigator: TANIGUCHI Hiromi 埼玉大学, 理工学研究科, 准教授 (50323374)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 有機伝導体 / 結晶合成 / 超高圧 / 結晶育成 / 電気分解 / 複合技術 / 圧力 / 圧力下合成

Outline of Final Research Achievements

We aimed the emergence of novel organic conductors and we tried to develop the method of high-pressure electrochemical synthesis. We succeded in synthesizing single crystals under pressures but obtained crystal were known phases. Therefore we did not obtain any evidence that the high pressure affected the crystal growth. However, we expected that this method could be applied to the system that had high solubility and novel crystal phase would appear.

Research Products

• [Journal Article] Pressure-Induced Mott Transition in an Organic Superconductor with a Finite Doping Level (2015)
  • Author(s): H. Oike, K. Miyagawa, H. Taniguchi, K. Kanoda
  • Journal Title: Phys. Rev. Lett. Volume: １１４ Issue: 6 Pages: 670021-5
  • DOI: 10.1103/physrevlett.114.067002
  • Peer Reviewed / Open Access
• [Journal Article] Zero-Field Magnetism of a Two-Dimensional Antiferromagnet, κ-(BEDT-TTF)2Cu[N(CN)2]Cl, Determined by Muon Spin Rotation and Magnetization Measurements (2015)
  • Author(s): Miho Ito, Tomotaka Uehara, Hiromi Taniguchi, Kazuhiko Satoh, Yasuyuki Ishii, Isao Watanabe
  • Journal Title: J. Phys. Soc. Jpn. Volume: ８４ Issue: 5 Pages: 0537031-5
  • DOI: 10.7566/jpsj.84.053703
  • NAID: 210000133542
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Superconducting fluctuation of the layered organic superconductor k-(BEDT-TTF)2Cu[N(CN)2]Br (2013)
  • Author(s): T. Uehara, M. Ito, H. Taniguchi, K. Satoh
  • Journal Title: J. Phys. Soc. Jpn Volume: 82 Issue: 7 Pages: 073706-073706
  • DOI: 10.7566/jpsj.82.073706
  • Peer Reviewed
• [Journal Article] Relaxor ferroelectricity induced by electron correlations in a molecular dimer Mott insulator (2013)
  • Author(s): S. Iguchi, S. Sasaki, N. Yoneyama, H. Taniguchi, T. Nishizaki, and T. Sasaki
  • Journal Title: Phys. Rev. B Volume: 87 Issue: 7 Pages: 075107075107-5
  • DOI: 10.1103/physrevb.87.075107
  • Peer Reviewed
• [Presentation] 静磁化率測定によるk-ET2Xの超伝導揺らぎの研究
  • Author(s): 坂手大輔、上原友敬、谷口弘三、佐藤一彦
  • Organizer: 日本物理学会
  • Place of Presentation: 横浜国立大学
• [Presentation] 分子性ダイマーモット絶縁体b'-ET2ICl2における強誘電リラクサー様の誘電特性
  • Author(s): 井口敏、佐々木智、米山直樹、谷口弘三、佐々木孝彦
  • Organizer: 日本物理学会
  • Place of Presentation: 横浜国立大学