2022 Fiscal Year Final Research Report
Novel Quantum States in Topological Kondo insulators
| Project/Area Number |
18K03511
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
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| Research Institution | Kyoto University |
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Principal Investigator |
Peters Robert 京都大学, 理学研究科, 講師 (80734293)
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| Project Period (FY) |
2018-04-01 – 2023-03-31
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| Keywords | Kondo insulators / topology / non-Hermitian phenomena / transport / nonlinear Hall effect / quantum oscillations |
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| Outline of Final Research Achievements |
In this research project, we explored the interplay between correlations and topology in Kondo insulators and Weyl semimetals with the ultimate goal of uncovering novel and unique phenomena. We showed how correlations, magnetism, and non-Hermiticity affect the symmetry-protected surface states in these systems. An important part of our research was the analysis of quantum oscillations in magnetic fields in topological Kondo insulators. We found a theoretical explanation of these quantum oscillations based on correlations and spin-orbit interaction. Furthermore, we demonstrated that correlations lead to a giant enhancement of nonlinear responses, exemplified by a large nonlinear Hall effect in a Weyl-Kondo semimetal. Our research on the interplay between correlations and nontrivial topology in Kondo insulators and Weyl semimetals has uncovered novel and unique phenomena that shed light on the complex interactions between magnetism, correlations, and non-Hermiticity in these systems.
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| Free Research Field |
strongly correlated electron systems
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| Academic Significance and Societal Importance of the Research Achievements |
Topological nontrivial, interacting materials are an exciting class of materials with potential applications in fields such as quantum computing and energy storage. During this research project, we advanced our knowledge about the interplay of topology and strong correlations in these materials.
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