中国物理B ›› 2025, Vol. 34 ›› Issue (6): 67503-067503.doi: 10.1088/1674-1056/adca17

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Complex magnetic and transport properties of EuBi2 single crystal

Ping Su(苏平)1, Hui Liang(梁慧)1,†, Yi-Ran Li(李祎冉)1, Huan Wang(王欢)2, Na Li(李娜)1, Kai-Yuan Hu(胡开源)1, Ying Zhou(周颖)1, Dan-Dan Wu(吴丹丹)1, Yan Sun(孙燕)1, Qiu-Ju Li(李秋菊)3, Jin-Jin Hong(洪锦锦)4, Xia Zhao(赵霞)5,‡, Xue-Feng Sun(孙学峰)1,§, and Yi-Yan Wang(王义炎)1,¶   

  1. 1 Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China;
    2 School of Police Equipment Technology, China People's Police University, Langfang 065000, China;
    3 School of Physics and Optoelectronic Engineering, Anhui University, Hefei 230601, China;
    4 Stony Brook Institute at Anhui University, Anhui University, Hefei 230039, China;
    5 School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2025-01-24 修回日期:2025-03-30 接受日期:2025-04-08 出版日期:2025-05-16 发布日期:2025-06-06
  • 通讯作者: Hui Liang, Xia Zhao, Xue-Feng Sun, Yi-Yan Wang E-mail:lianghui@ahu.edu.cn;xiazhao@ustc.edu.cn;xfsun@ahu.edu.cn;wyy@ahu.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2023YFA1406500), the National Natural Science Foundation of China (Grant Nos. 12474098, 12274388, 12174361, 12404191, 52102333, 12404043, and 12204004), and the Natural Science Foundation of Anhui Province (Grant No. 2408085QA024).

Complex magnetic and transport properties of EuBi2 single crystal

Ping Su(苏平)1, Hui Liang(梁慧)1,†, Yi-Ran Li(李祎冉)1, Huan Wang(王欢)2, Na Li(李娜)1, Kai-Yuan Hu(胡开源)1, Ying Zhou(周颖)1, Dan-Dan Wu(吴丹丹)1, Yan Sun(孙燕)1, Qiu-Ju Li(李秋菊)3, Jin-Jin Hong(洪锦锦)4, Xia Zhao(赵霞)5,‡, Xue-Feng Sun(孙学峰)1,§, and Yi-Yan Wang(王义炎)1,¶   

  1. 1 Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices, Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China;
    2 School of Police Equipment Technology, China People's Police University, Langfang 065000, China;
    3 School of Physics and Optoelectronic Engineering, Anhui University, Hefei 230601, China;
    4 Stony Brook Institute at Anhui University, Anhui University, Hefei 230039, China;
    5 School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China
  • Received:2025-01-24 Revised:2025-03-30 Accepted:2025-04-08 Online:2025-05-16 Published:2025-06-06
  • Contact: Hui Liang, Xia Zhao, Xue-Feng Sun, Yi-Yan Wang E-mail:lianghui@ahu.edu.cn;xiazhao@ustc.edu.cn;xfsun@ahu.edu.cn;wyy@ahu.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2023YFA1406500), the National Natural Science Foundation of China (Grant Nos. 12474098, 12274388, 12174361, 12404191, 52102333, 12404043, and 12204004), and the Natural Science Foundation of Anhui Province (Grant No. 2408085QA024).

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摘要： We report the magnetic and transport properties of EuBi$_2$ single crystal. EuBi$_2$ exhibits complex magnetic behavior at low temperatures. In both the in-plane and out-of-plane directions, three antiferromagnetic (AFM) transitions have been observed at $T_{{\rm N1}}$ $\sim$ 18.9 K, $T_{{\rm N2}} \sim 7.0 $ K, and $T_{{\rm N3}} \sim 3.1 $ K. Among them, the transitions at $T_{{\rm N2}}$ and $T_{{\rm N3}}$ represent the canted AFM orders with ferromagnetic components. As the magnetic field increases, the transition at $T_{{\rm N3}}$ is rapidly suppressed to disappearance. However, the transitions at $T_{{\rm N1}}$ and $T_{{\rm N2}}$ persist until high fields and their signatures can also be reflected in the resistivity and specific heat. Above the magnetic transition temperature $T_{{\rm N1}}$, the resistivity of EuBi$_2$ increases linearly with temperature, exhibiting the strange-metal behavior. In the magnetically ordered region below $T_{{\rm N1}}$, EuBi$_2$ exhibits the weak antilocalization (WAL) effect and large magnetoresistance (475% at 1.8 K and 14 T). It is suggested that the magnetic ordering significantly enhances the spin-orbital coupling interaction and induces the WAL effect.

关键词: EuBi$_2$ single crystal, antiferromagnetism, strange-metal behavior

Abstract: We report the magnetic and transport properties of EuBi$_2$ single crystal. EuBi$_2$ exhibits complex magnetic behavior at low temperatures. In both the in-plane and out-of-plane directions, three antiferromagnetic (AFM) transitions have been observed at $T_{{\rm N1}}$ $\sim$ 18.9 K, $T_{{\rm N2}} \sim 7.0 $ K, and $T_{{\rm N3}} \sim 3.1 $ K. Among them, the transitions at $T_{{\rm N2}}$ and $T_{{\rm N3}}$ represent the canted AFM orders with ferromagnetic components. As the magnetic field increases, the transition at $T_{{\rm N3}}$ is rapidly suppressed to disappearance. However, the transitions at $T_{{\rm N1}}$ and $T_{{\rm N2}}$ persist until high fields and their signatures can also be reflected in the resistivity and specific heat. Above the magnetic transition temperature $T_{{\rm N1}}$, the resistivity of EuBi$_2$ increases linearly with temperature, exhibiting the strange-metal behavior. In the magnetically ordered region below $T_{{\rm N1}}$, EuBi$_2$ exhibits the weak antilocalization (WAL) effect and large magnetoresistance (475% at 1.8 K and 14 T). It is suggested that the magnetic ordering significantly enhances the spin-orbital coupling interaction and induces the WAL effect.

Key words: EuBi$_2$ single crystal, antiferromagnetism, strange-metal behavior

中图分类号:  (Antiferromagnetics)

  • 75.50.Ee
72.15.Eb (Electrical and thermal conduction in crystalline metals and alloys) 75.47.-m (Magnetotransport phenomena; materials for magnetotransport) 75.20.En (Metals and alloys)