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DOE OSTI · 2867904

Interwoven magnetic kagome metal overcomes geometric frustration

Cheng, Erjian [Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)] (ORCID:0000000308416986)·Wang, Kaipu [ShanghaiTech Univ. (China)]·Hao, Yiqing [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)]·Chen, Wenqing [Rutgers Univ., Piscataway, NJ (United States)]·Tan, Hengxin [Weizmann Institute of Science, Rehovot (Israel)] (ORCID:0000000263664731)·Li, Zongkai [ShanghaiTech Univ. (China)]·Wang, Meixiao [ShanghaiTech Univ. (China)]·Gao, Wenli [Chinese Academy of Sciences (CAS), Beijing (China)]·Wu, Di [Chinese Academy of Sciences (CAS), Beijing (China)] (ORCID:0009000278234627)·Sun, Shuaishuai [Chinese Academy of Sciences (CAS), Beijing (China)] (ORCID:0000000293633901)·Ying, Tianping [Chinese Academy of Sciences (CAS), Beijing (China)] (ORCID:0000000176651270)·Nie, Simin [Stanford Univ., CA (United States)]·Li, Yiwei [Wuhan Univ. (China)] (ORCID:000000020573042X)·Schnelle, Walter [Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)] (ORCID:0009000701367268)·Chen, Houke [Univ. of Oxford (United Kingdom)]·Zhou, Xingjiang [Chinese Academy of Sciences (CAS), Beijing (China)] (ORCID:0000000252611386)·Koban, Ralf [Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)]·Chen, Yulin [ShanghaiTech Univ. (China); Univ. of Oxford (United Kingdom)] (ORCID:0000000189609725)·Yan, Binghai [Weizmann Institute of Science, Rehovot (Israel)] (ORCID:0000000321645839)·Yang, Yi-feng [Chinese Academy of Sciences (CAS), Beijing (China); Songshan Lake Materials Laboratory, Dongguan (China)] (ORCID:0000000267026091)·Wu, Weida [Rutgers Univ., Piscataway, NJ (United States)] (ORCID:0000000316916091)·Liu, Zhongkai [ShanghaiTech Univ. (China)] (ORCID:0000000333738039)·Felser, Claudia [Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)] (ORCID:0000000282002063)
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Abstract

Magnetic kagome materials provide a platform for exploring magneto-transport phenomena, symmetry breaking and charge ordering driven by the intricate interplay among electronic structure, topology and magnetism. Yet geometric frustration in conventional kagome magnets limits their tunability. Here we propose a design strategy for interweaving quasi-one-dimensional magnetic Tb zigzag chains with non-magnetic Ti-based kagome bilayers in TbTi 3 Bi 4 . Comprehensive spectroscopic analyses reveal coexisting elliptical-spiral magnetic and spin-density-wave orders accompanied by a large ~90 meV band-folding gap. The combined magnetic and electronic state leads to a giant anomalous Hall conductivity of 10 5 Ω −1 cm −1 , which exceeds that observed in frustrated kagome analogues. These results establish TbTi 3 Bi 4 as a model system of magnetic kagome metals with strong electron–magnetism interactions and underscore the necessity of interweaving designed magnetic and charge layers separately to achieve tunable transport properties. This design strategy will enable the discovery of emergent quantum states and next-generation electronic materials.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYARPESSDWSP-STMelectronic properties and materialskagomemagnetic properties and materials

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Cheng, Erjian [Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)] (ORCID:0000000308416986), Wang, Kaipu [ShanghaiTech Univ. (China)], Hao, Yiqing [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)], Chen, Wenqing [Rutgers Univ., Piscataway, NJ (United States)], Tan, Hengxin [Weizmann Institute of Science, Rehovot (Israel)] (ORCID:0000000263664731), Li, Zongkai [ShanghaiTech Univ. (China)], Wang, Meixiao [ShanghaiTech Univ. (China)], Gao, Wenli [Chinese Academy of Sciences (CAS), Beijing (China)], Wu, Di [Chinese Academy of Sciences (CAS), Beijing (China)] (ORCID:0009000278234627), Sun, Shuaishuai [Chinese Academy of Sciences (CAS), Beijing (China)] (ORCID:0000000293633901), Ying, Tianping [Chinese Academy of Sciences (CAS), Beijing (China)] (ORCID:0000000176651270), Nie, Simin [Stanford Univ., CA (United States)], Li, Yiwei [Wuhan Univ. (China)] (ORCID:000000020573042X), Schnelle, Walter [Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)] (ORCID:0009000701367268), Chen, Houke [Univ. of Oxford (United Kingdom)], Zhou, Xingjiang [Chinese Academy of Sciences (CAS), Beijing (China)] (ORCID:0000000252611386), Koban, Ralf [Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)], Chen, Yulin [ShanghaiTech Univ. (China); Univ. of Oxford (United Kingdom)] (ORCID:0000000189609725), Yan, Binghai [Weizmann Institute of Science, Rehovot (Israel)] (ORCID:0000000321645839), Yang, Yi-feng [Chinese Academy of Sciences (CAS), Beijing (China); Songshan Lake Materials Laboratory, Dongguan (China)] (ORCID:0000000267026091), Wu, Weida [Rutgers Univ., Piscataway, NJ (United States)] (ORCID:0000000316916091), Liu, Zhongkai [ShanghaiTech Univ. (China)] (ORCID:0000000333738039), Felser, Claudia [Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)] (ORCID:0000000282002063). 2025-12-22. Interwoven magnetic kagome metal overcomes geometric frustration. https://doi.org/10.1038/s41563-025-02414-4

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