Clarification of the mechanism of charge, spin, and orbital and their control in thermoelectric cobalt oxides

阐明热电钴氧化物中电荷、自旋和轨道的机制及其控制

• 批准号: 21740251
• 负责人: TAKAMI Tsuyoshi
• 金额: $ 2.33万
• 依托单位: Osaka University (2010)Nagoya University (2009)
• 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-21740251/
• 关键词: 磁性; 強相関電子系; 物性実験; 環境材料; 排熱利用; 廃熱利用

Nuclear magnetic resonance (NMR) is a quite useful prove for directly obtaining information on charge, spin, and orbital, which are the internal degree of freedom of electron. This study is motivated by the desire to derive the information by performing ^<59>Co NMR measurements of thermoelectric cobalt oxides; the contribution of these effects on the thermoelectric properties is clarified. Furthermore, a guiding principle would be obtained by controlling these freedoms in the viewpoint of valence, spin, and dimensionality on the basis of the obtained knowledge.

核磁共振（NMR）是直接获取电子内部自由度电荷、自旋和轨道信息的非常有用的证明。本研究的动机是希望通过对热电钴氧化物进行 59 Co NMR 测量来获取信息；阐明了这些效应对热电性能的贡献。此外，根据所获得的知识，通过从化合价、自旋和维度的角度控制这些自由度，可以获得指导原则。

项目成果

59Co NMR study on local magnetic properties of Ca1−xNaxCo2O4

Ca1−xNaxCo2O4 局部磁性能的 59Co NMR 研究

• DOI: 10.1088/1742-6596/200/1/012197
• 发表时间: 2010
• 作者: T. Takami;M. Itoh;M. Isobe;M. Arai;T. Kawashima;E. Takayama
• 通讯作者: E. Takayama