中国物理B ›› 2025, Vol. 34 ›› Issue (10): 107511-107511.doi: 10.1088/1674-1056/adde37

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Tunable anomalous Hall effect and anisotropic magnetism in In-doped TbMn6Sn6 kagome magnets

Detong Wu(吴德桐)1,2,†, Jianwei Qin(秦建伟)1,2,†, and Bing Shen(沈冰)1,2,‡   

  1. 1 Center for Neutron Science and Technology, Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China;
    2 State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China
  • 收稿日期:2025-04-07 修回日期:2025-05-28 接受日期:2025-05-29 发布日期:2025-10-09
  • 通讯作者: Bing Shen E-mail:shenbing@mail.sysu.edu.cn
  • 基金资助:
    Project supported by Guangzhou Basic and Applied Basic Research Foundation (Grant No. 2023B151520013), the National Natural Sciences Foundation of China (Grant No. 92165204), the National Key Research and Development Program of China (Grant Nos. 2023YFF0718400 and 2022YFA1403301), the Fund from the Research Center for Magnetoelectric Physics of Guangdong Province, China (Grant No.2024B0303390001), and the Independent Fund of the State Key Laboratory of Optoelectronic & Materials and Technologies (Sun Yat-sen University) (Grant No. OEMT-2023-ZTS-01).

Tunable anomalous Hall effect and anisotropic magnetism in In-doped TbMn6Sn6 kagome magnets

Detong Wu(吴德桐)1,2,†, Jianwei Qin(秦建伟)1,2,†, and Bing Shen(沈冰)1,2,‡   

  1. 1 Center for Neutron Science and Technology, Guangdong Provincial Key Laboratory of Magnetoelectric Physics and Devices, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China;
    2 State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China
  • Received:2025-04-07 Revised:2025-05-28 Accepted:2025-05-29 Published:2025-10-09
  • Contact: Bing Shen E-mail:shenbing@mail.sysu.edu.cn
  • Supported by:
    Project supported by Guangzhou Basic and Applied Basic Research Foundation (Grant No. 2023B151520013), the National Natural Sciences Foundation of China (Grant No. 92165204), the National Key Research and Development Program of China (Grant Nos. 2023YFF0718400 and 2022YFA1403301), the Fund from the Research Center for Magnetoelectric Physics of Guangdong Province, China (Grant No.2024B0303390001), and the Independent Fund of the State Key Laboratory of Optoelectronic & Materials and Technologies (Sun Yat-sen University) (Grant No. OEMT-2023-ZTS-01).

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摘要： Kagome magnets TbMn$_6$Sn$_{6-x}$In$_x$ ($x = 0$-1.2) exhibit a robust anomalous Hall effect (AHE) that persists above room temperature, demonstrating significant potential for high-temperature spintronics applications. At elevated temperatures, a spin-reorientation transition induces a ferrimagnetic state (FIM1) with in-plane magnetic moments, accompanied by a non-monotonic Hall response that differs markedly from the low-temperature behavior. Upon indium doping, the long-range ferrimagnetic transition is progressively suppressed to lower temperatures, along with a noticeable reduction in magnetic anisotropy. Interestingly, at a doping level of $x = 1.2$, the FIM1 state observed in the parent compound is completely eliminated. These systematic changes in magnetic ordering and transport properties underscore a coherent evolution of the electronic and magnetic states with doping, offering critical insights into the interplay among lattice structure, magnetism, and electronic behavior in kagome lattices.

关键词: anomalous Hall effect, magnetic properties, ferrimagnetism, nonmagnetic element doping

Abstract: Kagome magnets TbMn$_6$Sn$_{6-x}$In$_x$ ($x = 0$-1.2) exhibit a robust anomalous Hall effect (AHE) that persists above room temperature, demonstrating significant potential for high-temperature spintronics applications. At elevated temperatures, a spin-reorientation transition induces a ferrimagnetic state (FIM1) with in-plane magnetic moments, accompanied by a non-monotonic Hall response that differs markedly from the low-temperature behavior. Upon indium doping, the long-range ferrimagnetic transition is progressively suppressed to lower temperatures, along with a noticeable reduction in magnetic anisotropy. Interestingly, at a doping level of $x = 1.2$, the FIM1 state observed in the parent compound is completely eliminated. These systematic changes in magnetic ordering and transport properties underscore a coherent evolution of the electronic and magnetic states with doping, offering critical insights into the interplay among lattice structure, magnetism, and electronic behavior in kagome lattices.

Key words: anomalous Hall effect, magnetic properties, ferrimagnetism, nonmagnetic element doping

中图分类号:  (Galvanomagnetic and other magnetotransport effects)

  • 72.20.My
75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)) 75.30.Cr (Saturation moments and magnetic susceptibilities) 75.50.Gg (Ferrimagnetics)