2023 Fiscal Year Research-status Report
A new material landscape of rare-earth intermetallics for exploration non-trivial topological spin textures
| Project/Area Number |
23K13069
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| Research Institution | The University of Tokyo |
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Principal Investigator |
ヌイェン カーン 東京大学, 大学院工学系研究科(工学部), 特任助教 (50775608)
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| Project Period (FY) |
2023-04-01 – 2025-03-31
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| Keywords | Magnetism / Skyrmion / Topology / Intermetallics / centrosymmetric |
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| Outline of Annual Research Achievements |
This project aims to focus on material exploration and formation mechanism of magnetic skyrmions and other topological spin textures in intermetallics RT2SX2 "122" (R: rare-earth, T: transition metal elements). In the initial phase, we successfully synthesized several materials exhibiting intriguing features in magnetic and transport properties. An example of this is NdRu2Si2, which shows intriguing magnetic orders such as stripe single-Q state and checkerboard double-Q state under the presence of a magnetic field. Depending on the magnetic structure, non-trivial behaviors in transport properties and neutron diffraction can be observed, suggesting this material as a promising platform for investigating the interplay between topological characteristics, magnetism and transport properties.
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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
Aligned with the goals of this project, we have successfully synthesized single crystals of various intermetallic materials with the "122" structure, which is crucial for investigating intriguing magnetic and transport properties. This effort is particularly significant as we collaborate with researchers from diverse disciplines, such as theoretical studies and neutron diffraction research. These factors contribute to the smooth progress of the current project.
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| Strategy for Future Research Activity |
For the second phase of this project, we aim to expand the project's scope in terms of material development. Additionally, we plan to summarize the ongoing results into a comprehensive research article. Collaborating with theorists and quantum beam research scientists, we aim to delve deeper into the stabilization mechanism of these magnetic structures. Our overarching goal is to derive guiding principles for material design based on the insights gained from these investigations. This strategic approach not only broadens the project's horizons but also sets the stage for impactful contributions to the field of materials science and technology.
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| Causes of Carryover |
The remaining funding will be allocated towards covering expenses related to conducting experiments at a quantum beam facility. Additionally, a portion of this budget will be utilized to reimburse fees associated with participating in joint domestic and international conferences. This strategic allocation ensures that we can leverage valuable experimental facilities and engage in scholarly exchanges to further advance our research objectives and disseminate our findings to a wider scientific community.
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[Presentation] Multi-step topological transitions among meron and skyrmion crystals in a centrosymmetric magnet2024
Author(s)
H. Yoshimochi, R. Takagi, J. Ju, N. D. Khanh, H. Saito, H. Sagayama, H. Nakao, S. Itoh, Y. Tokura, T. Arima, S. Hayami, T. Nakajima, S. Seki
Organizer
CEMS symposium on emergent quantum materials 2024
Int'l Joint Research
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[Presentation] Topological Nernst response in a chiral van der Waals antiferromagnet2024
Author(s)
Nguyen Duy Khanh, Susumu Minami, Moritz M. Hirschmann, Ming-Chun Jiang, Rinsuke Yamada, Takuya Nomoto, Daiki Yamaguchi, Yoshihiro Okamura, Youtarou Takahashi, Shinichiro Seki, Yoshinori Tokura, Yasujiro Taguchi, Ryotaro Arita, Max Hirschberger
Organizer
CEMS symposium on emergent quantum materials 2024
Int'l Joint Research
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[Presentation] 空間反転対称性な正方晶スキルミオンホストGdRu2(Si,Ge)2における新規相の発見と磁性の考察2023
Author(s)
松山直史, 野村肇宏, 速水賢, 加藤康之, 吉持遥人, Nguyen Duy Khanh, 高木里奈, 十倉好紀, 関真一郎, 小濱芳允
Organizer
本物理学会2023年年次大会
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