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Quantum interactions in topological R166 kagome magnet
Xitong Xu1, Jia-Xin Yin2, Zhe Qu1,3
1Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China.
Reports on Progress in Physics. Physical Society (Great Britain)
|September 26, 2023
Summary
Exotic quantum states emerge in R166 kagome magnets due to strong interactions between d and f electrons. These interactions drive topological effects like Chern-gap opening and topological Hall effect in condensed matter systems.
Area of Science:
- Condensed matter physics
- Quantum magnetism
- Materials science
Background:
- Kagome lattices host exotic quantum states due to their unique geometry.
- R166 kagome magnets (RT6E6) feature transition-metal kagome layers and rare-earth sublattices.
- Strong interplay between d-electrons (kagome site) and f-electrons (rare-earth site) is characteristic of R166 magnets.
Purpose of the Study:
- Review recent advances in the study of R166 kagome magnets.
- Highlight the role of quantum interactions in topological phenomena.
- Provide a guide for future research on quantum magnets.
Main Methods:
- Spectroscopic visualization of topological electrons.
- Transport measurements to observe topological effects.
- Theoretical analysis of spin-orbital coupling, exchange interactions, and many-body effects.
Main Results:
- R166 magnets exhibit strong interplay between d and f electrons, influencing Berry curvature.
- Spectroscopic and transport data reveal topological electrons in RMn6Sn6.
- Observed topological effects include Chern-gap opening, exchange bias, topological Hall effect, and emergent inductance.
Conclusions:
- Quantum interactions in R166 kagome magnets are crucial for emergent topological phenomena.
- The R166 family offers a promising platform for exploring exotic quantum states.
- This review guides future investigations into quantum magnetism and topological materials.
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