Quantum interactions in topological R166 kagome magnet

Xu, Xitong1; Yin, Jia-Xin2; Qu, Zhe1,3; Jia, Shuang4,5

2023-11-01

10.1088/1361-6633/acfd3d

REPORTS ON PROGRESS IN PHYSICS   Impact Factor & Quartile

0034-4885

1361-6633

Kagome magnet has been found to be a fertile ground for the search of exotic quantum states in condensed matter. Arising from the unusual geometry, the quantum interactions in the kagome lattice give rise to various quantum states, including the Chern-gapped Dirac fermion, Weyl fermion, flat band and van Hove singularity. Here we review recent advances in the study of the R166 kagome magnet (RT6E6, R = rare earths; T = transition metals; and E = Sn, Ge, etc) whose crystal structure highlights the transition-metal-based kagome lattice and rare-earth sublattice. Compared with other kagome magnets, the R166 family owns the particularly strong interplays between the d electrons on the kagome site and the localized f electrons on the rare-earth site. In the form of spin-orbital coupling, exchange interaction and many-body effect, the quantum interactions play an essential role in the Berry curvature in both the reciprocal and real spaces of R166 family. We discuss the spectroscopic and transport visualization of the topological electrons hosted in the Mn kagome layer of RMn6Sn6 and the various topological effects due to the quantum interactions, including the Chern-gap opening, the exchange-biased effect, the topological Hall effect and the emergent inductance. We hope this work serves as a guide for future explorations of quantum magnets.

kagome magnet quantum interaction Chern gap

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English

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This work was supported by the National Key Ramp;D Program of China Grant Number 2022YFA1403603 and 2021YFA1401902, National Natural Science Foundation of China Grant Numbers U2032213, U1832214, 12104461, 12141002, 12225401, 12374060, and 12374129, CAS Pr["2022YFA1403603","2021YFA1401902"] ; National Key Ramp;D Program of China["U2032213","U1832214","12104461","12141002","12225401","12374060","12374129"] ; National Natural Science Foundation of China[YSBR-084] ; CAS Project for Young Scientists in Basic Research[XDB28000000] ; High Magnetic Field Laboratory of Anhui Province["2022T150655","2020M682056"] ; China Postdoctoral Science Foundation[2020B472] ; Anhui Postdoctoral Foundation[2108085QA23] ; Anhui Provincial Natural Science Foundation[PECL2021ZD003]

Physics

Physics, Multidisciplinary

WOS:001080762200001

IOP Publishing Ltd

PHYSICS

Web of Science

1.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Key Lab Condensed Matter Phys Extreme Condit, High Magnet Field Lab, Hefei 230031, Anhui, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Chinese Acad Sci, Hefei Inst Phys Sci, CAS Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Anhui, Peoples R China
4.Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China
5.Peking Univ, Interdisciplinary Inst Light Element Quantum Mat, Res Ctr Light Element Adv Mat, Beijing 100871, Peoples R China

Xu, Xitong,Yin, Jia-Xin,Qu, Zhe,et al. Quantum interactions in topological R166 kagome magnet[J]. REPORTS ON PROGRESS IN PHYSICS,2023,86(11).

Xu, Xitong,Yin, Jia-Xin,Qu, Zhe,&Jia, Shuang.(2023).Quantum interactions in topological R166 kagome magnet.REPORTS ON PROGRESS IN PHYSICS,86(11).

Xu, Xitong,et al."Quantum interactions in topological R166 kagome magnet".REPORTS ON PROGRESS IN PHYSICS 86.11(2023).