2020 Fiscal Year Annual Research Report
Experimental study of topological phases in strongly correlated system
| Project/Area Number |
20F20315
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| Research Institution | The University of Tokyo |
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Principal Investigator |
中辻 知 東京大学, 大学院理学系研究科(理学部), 教授 (70362431)
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| Co-Investigator(Kenkyū-buntansha) |
FENG ZILI 東京大学, 理学(系)研究科(研究院), 外国人特別研究員
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| Project Period (FY) |
2020-11-13 – 2023-03-31
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| Keywords | Kagome Lattice / Magnetic Weyl Semimetal |
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| Outline of Annual Research Achievements |
According to my research plan, the first six month will mainly focus on the high-quality single crystal growth. After I received the JSPS fellowship, I started to explore the single crystal growth for Mn3X (X = Sn, Ge, Ga) system. Currently, high quality and enough size samples are already obtained. Various properties are checked carefully, which can help us pick out the best samples. These samples make the next measurement feasible.
For this project, another main goal is to get the composition controllable samples. For Mn3Sn system, the composition controllable samples have been successfully grown using Bridgman method in our lab. However, for Mn3Ge system, the Bridgman method does not work. I am trying find out the effective method to control the composition for Mn3Ge and Mn3Ga.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
Currently, high quality samples have already been obtained by flux method. Therefore, I can start the magnetostriction measurement and meanwhile I will continue to grow variant-composition compounds. For Mn3+XGe, I would try to control x change from -0.1 to +0.1. The x value not only affect the magnetic properties, but also influence the transport properties greatly.
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| Strategy for Future Research Activity |
I will set up the magnetostriction measurement system. In our lab, we have a high-resolution capacitive dilatometer which enable us to measure the magnetostriction in high magnetic field and various temperature. The measurement on these samples may provide us more detailed information about the orbital-spin-charge coupling effect in kagome antiferromagnet system.
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