Experimental investigation of the novel topological quantum magnets

新型拓扑量子磁体的实验研究

• 批准号: 18F18025
• 负责人: 中辻 知
• 金额: $ 1.54万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-04-25 至 2020-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18F18025/
• 关键词: ワイル半金属; トポロジー; 幾何学的フラストレーション

The interplay of topology and magnetism is become the emerging frontier in fundamental quantum physics. Therefore, as a basis of my research, I have grown new crystals of topological magnets by manipulating the crystal symmetry, spin orbit coupling, and magnetic structure. Control over these parameters allows one to realize a wide variety of topological phases which includes Dirac/Weyl semimetal state and Fermi-arc surface states etc. So far, a rare anomalous Hall effect in co-linear aniferromagnetic spins structure is observed which is a big step forward on achieving ultra-fast spintronic devices. In the sector of clean energy harvesting, we are successful to achieve large Nernst effect at room temperature. Some of these work as JSPS fellow is in the process of communication.

拓扑学和磁性的相互作用正在成为基础量子物理学的新兴前沿。因此，作为我研究的基础，我通过操纵晶体对称性、自旋轨道耦合和磁结构来生长拓扑磁体的新晶体。控制这些参数可以实现各种各样的拓扑相，包括Dirac/Weyl半金属态和费米弧表面态等。到目前为止，在共线反铁磁自旋结构中观察到罕见的异常霍尔效应，这是实现超快自旋电子器件的一大步。在清洁能源收集领域，我们成功实现了室温下的大能斯特效应。 其中一些工作作为JSPS研究员正在沟通过程中。

项目成果

中辻研究室

中辻实验室