中国物理B ›› 2024, Vol. 33 ›› Issue (10): 107507-107507.doi: 10.1088/1674-1056/ad6f93

所属专题： SPECIAL TOPIC — Recent progress on kagome metals and superconductors

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Anomalous Hall effect and electronic correlation in a spin-reoriented kagome antiferromagnet LuFe6Sn6

Meng Lyu(吕孟)1, Yang Liu(刘洋)1,2, Shen Zhang(张伸)1,3, Junyan Liu(刘俊艳)1, Jinying Yang(杨金颖)1,2, Yibo Wang(王一博)1,2, Yiting Feng(冯乙婷)1,2, Xuebin Dong(董学斌)1,2, Binbin Wang(王彬彬)1, Hongxiang Wei(魏红祥)1, and Enke Liu(刘恩克)1,2,†   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China
  • 收稿日期:2024-07-11 修回日期:2024-08-06 接受日期:2024-08-15 出版日期:2024-10-15 发布日期:2024-10-15
  • 通讯作者: Enke Liu E-mail:ekliu@iphy.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2022YFA1403400, 2019YFA0704900, and 2022YFA1403800), the Fundamental Science Center of the National Natural Science Foundation of China (Grant No. 52088101), the National Natural Science Foundation of China (Grant Nos. 11974394 and 12174426), the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) (Grant No. XDB33000000), the CAS Project for Young Scientists in Basic Research (Grant No. YSBR-057), the Synergetic Extreme Condition User Facility (Grant No. SECUF), and the Scientific Instrument Developing Project of CAS (Grant No. ZDKYYQ20210003).

Anomalous Hall effect and electronic correlation in a spin-reoriented kagome antiferromagnet LuFe6Sn6

Meng Lyu(吕孟)1, Yang Liu(刘洋)1,2, Shen Zhang(张伸)1,3, Junyan Liu(刘俊艳)1, Jinying Yang(杨金颖)1,2, Yibo Wang(王一博)1,2, Yiting Feng(冯乙婷)1,2, Xuebin Dong(董学斌)1,2, Binbin Wang(王彬彬)1, Hongxiang Wei(魏红祥)1, and Enke Liu(刘恩克)1,2,†   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China
  • Received:2024-07-11 Revised:2024-08-06 Accepted:2024-08-15 Online:2024-10-15 Published:2024-10-15
  • Contact: Enke Liu E-mail:ekliu@iphy.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2022YFA1403400, 2019YFA0704900, and 2022YFA1403800), the Fundamental Science Center of the National Natural Science Foundation of China (Grant No. 52088101), the National Natural Science Foundation of China (Grant Nos. 11974394 and 12174426), the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) (Grant No. XDB33000000), the CAS Project for Young Scientists in Basic Research (Grant No. YSBR-057), the Synergetic Extreme Condition User Facility (Grant No. SECUF), and the Scientific Instrument Developing Project of CAS (Grant No. ZDKYYQ20210003).

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摘要： The kagome lattice system has been identified as a fertile ground for the emergence of a number of new quantum states, including superconductivity, quantum spin liquids, and topological electronic states. This has attracted significant interest within the field of condensed matter physics. Here, we present the observation of an anomalous Hall effect in an iron-based kagome antiferromagnet LuFe$_{6}$Sn$_{6}$, which implies a non-zero Berry curvature in this compound. By means of extensive magnetic measurements, a high Neel temperature, $T_{\rm N} = 552 $ K, and a spin reorientation behavior were identified and a simple temperature-field phase diagram was constructed. Furthermore, this compound was found to exhibit a large Sommerfeld coefficient of $\gamma = 87 $ mJ$\cdot $mol$^{-1}\cdot$K$^{-2}$, suggesting the presence of a strong electronic correlation effect. Our research indicates that LuFe$_{6}$Sn$_{6}$ is an intriguing compound that may exhibit magnetism, strong correlation, and topological states.

关键词: kagome lattice, anomalous Hall effect, magnetism, electronic correlation

Abstract: The kagome lattice system has been identified as a fertile ground for the emergence of a number of new quantum states, including superconductivity, quantum spin liquids, and topological electronic states. This has attracted significant interest within the field of condensed matter physics. Here, we present the observation of an anomalous Hall effect in an iron-based kagome antiferromagnet LuFe$_{6}$Sn$_{6}$, which implies a non-zero Berry curvature in this compound. By means of extensive magnetic measurements, a high Neel temperature, $T_{\rm N} = 552 $ K, and a spin reorientation behavior were identified and a simple temperature-field phase diagram was constructed. Furthermore, this compound was found to exhibit a large Sommerfeld coefficient of $\gamma = 87 $ mJ$\cdot $mol$^{-1}\cdot$K$^{-2}$, suggesting the presence of a strong electronic correlation effect. Our research indicates that LuFe$_{6}$Sn$_{6}$ is an intriguing compound that may exhibit magnetism, strong correlation, and topological states.

Key words: kagome lattice, anomalous Hall effect, magnetism, electronic correlation

中图分类号:  (Antiferromagnetics)

  • 75.50.Ee
72.15.-v (Electronic conduction in metals and alloys) 75.47.-m (Magnetotransport phenomena; materials for magnetotransport)