Theoretical study on metal-insulator transition and superconductivity brought from ordering and fluctuation of multipolar moments

多极矩有序和涨落带来的金属-绝缘体转变和超导理论研究

• 批准号: 21540368
• 负责人: SHIINA Ryousuke
• 金额: $ 1.66万
• 依托单位: Niigata University (2010-2011)Kanagawa University (2009)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21540368/
• 关键词: 強相関電子系; f電子; 多極子; 磁性; 結晶場; 磁場; 金属絶縁体転移; 超伝導; 希土類化合物; f電子系; cf混成; 重荷秩序; スクッテルダイト; 電子系; 伝導電子; 核スピン; 微細相互作用; 磁気抵抗; バンド構造; PrRu_4P_<12>; 電荷秩序; 動的平均場理論; 輸送現象

In this project, we have done theoretical studies on unconventional ordering and fluctuation of local multipoles and conduction-electron states in rare-earth compounds. It was shown particularly that the nature of the charge order and the transport properties of conduction electrons in P_rR-u_4P_<12> are explained unifiedly by the pf hybridization model. Then, it was also unveiled that rich variety of ordering phenomena in other skutterudites such as the quadrupolar effect in the superconductor P_rO_s_4Sb_<12> and a complex magnetism in P_rF_e_4A_s_<12> are derived from an interplay of the pf and df hybridizations.

在本课题中，我们对稀土化合物中局部多极态和导电电子态的非常规有序和涨落进行了理论研究。结果表明，P_rR-u_4P_<12>中导电电子的荷序性质和输运性质可以用pf杂化模型统一解释。此外，还揭示了超导体P_rO_s_4Sb_<12>中的四极效应和P_rF_e_4A_s_<12>中的复杂磁性是由pf和df杂化相互作用产生的。

项目成果

PrRu_4P_<12>の電荷秩序を記述する有効ハミルトニアン

描述 PrRu_4P_<12> 电荷顺序的有效哈密顿量

• 发表时间: 2010
• 作者: 世良正文;田中大貴;谷田博司;小川真由子;森吉千佳子;黒岩芳弘;西岡孝;松村政博;金延恩;辻成希;高田昌;斯波弘行,椎名亮輔
• 通讯作者: 斯波弘行,椎名亮輔

Multipolar Interaction Derived from d–f Hybridization in Pr-Based Filled Skutterudite Compounds

Pr基填充方钴矿化合物中d-f杂化衍生的多极相互作用

• DOI: 10.1143/jpsj.81.024706
• 发表时间: 2012
• 期刊: Journal of the Physical Society of Japan
• 影响因子: 1.7
• 作者: R. Shiina

PrRu_4P_<12>におけるcf混成と低温輸送特性

PrRu_4P_<12> 中的 cf 杂化和低温传输特性

• 发表时间: 2011
• 作者: H.Kato;S.Kambe;他5名;椎名亮輔;椎名亮輔;椎名亮輔
• 通讯作者: 椎名亮輔

Theory of Orbital Fluctuation and Electrical Transport in Unconventional Charge Density Wave Phase of Skutterudite PrRu4P12

方钴矿PrRu4P12非常规电荷密度波相轨道涨落与电输运理论

• DOI: 10.1143/jpsj.78.104722
• 发表时间: 2009
• 期刊: Journal of the Physical Society of Japan
• 影响因子: 1.7
• 作者: R. Shiina

Theory of Unconventional Charge Order-ing and Low-Temperature Magneto-Transport in PrRu_4P_<12>

PrRu_4P_<12>中非常规电荷排序与低温磁输运理论

• 发表时间: 2011
• 作者: 鬼丸孝博;他;R. Shiina
• 通讯作者: R. Shiina