Studies on novel ground states and the mechanism of pressure-induced superconductivities in organic triangular-lattice Mott insulators

有机三角晶格莫特绝缘体新型基态及压力诱导超导机理研究

• 批准号: 21740255
• 负责人: ITOU Tetsuaki
• 金额: $ 2.83万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740255/
• 关键词: 有機導体; スピン液体; スピンギャップ; 超伝導

Theorists have considered that exotic magnetism and superconductivity are possibly realized in triangular-lattice systems. I have experimentally revealed that organic triangular-lattice X[Pd(dmit)_2]_2 systems shows these exotic states. The system X=(C_2H_5)(CH_3)_3Sb was found to show a quantum spin-liquid state. I also found that the ground state of this quantum spin liquid has exotic hidden order unforeseen by classical physics. I revealed that the system X=(C_2H_5)(CH_3)_3P shows exotic superconductivity which is different from the usual d_<x2-y2> superconductivity mediated by (π, π) antiferromagnetic fluctuations.

理论家们认为奇异磁性和超导性可能在三角晶格系统中实现。我在实验上发现有机三角晶格X[Pd（dmit）_2]_2体系具有这些奇异态。发现X=（C_2H_5）（CH_3）_3Sb体系为量子自旋液体态。我还发现，这种量子自旋液体的基态具有经典物理学无法预见的奇异隐藏秩序。本文揭示了X=（C_2H_5）（CH_3）_3P体系具有不同于通常<x2-y2>由（π，π）反铁磁涨落介导的d_超导的奇异超导电性。

项目成果

ホームページ等。

主页等