中国物理B ›› 2025, Vol. 34 ›› Issue (7): 77305-077305.doi: 10.1088/1674-1056/adcc87

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In-plane negative magnetoresistance and quantum oscillations in van der Waals antiferromagnet DyTe3

Qi Qi(齐琦)1,2,†, Senhao Lv(吕森浩)1,†, Ke Zhu(祝轲)1,2, Yaofeng Xie(谢耀锋)1,2, Guojing Hu(胡国静)1, Zhen Zhao(赵振)1, Guoyu Xian(冼国裕)3, Yechao Han(韩烨超)2, Yang Yang(杨洋)1,2, Lihong Bao(鲍丽宏)1,2, Xiao Lin(林晓)2, Hui Guo(郭辉)1,2,‡, Haitao Yang(杨海涛)1,2,§, and Hong-Jun Gao(高鸿钧)1,2   

  1. 1 Beijing National Center for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • 收稿日期:2025-02-08 修回日期:2025-03-06 接受日期:2025-04-15 出版日期:2025-06-18 发布日期:2025-06-18
  • 通讯作者: Hui Guo, Haitao Yang E-mail:guohui@iphy.ac.cn;htyang@iphy.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 62488201 and 1240041502), the Ministry of Science and Technology of China (Grant No. 2022YFA1204100), the Chinese Academy of Sciences (Grant No. XDB33030100), and the Innovation Program of Quantum Science and Technology (Grant No. 2021ZD0302700).

In-plane negative magnetoresistance and quantum oscillations in van der Waals antiferromagnet DyTe3

Qi Qi(齐琦)1,2,†, Senhao Lv(吕森浩)1,†, Ke Zhu(祝轲)1,2, Yaofeng Xie(谢耀锋)1,2, Guojing Hu(胡国静)1, Zhen Zhao(赵振)1, Guoyu Xian(冼国裕)3, Yechao Han(韩烨超)2, Yang Yang(杨洋)1,2, Lihong Bao(鲍丽宏)1,2, Xiao Lin(林晓)2, Hui Guo(郭辉)1,2,‡, Haitao Yang(杨海涛)1,2,§, and Hong-Jun Gao(高鸿钧)1,2   

  1. 1 Beijing National Center for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • Received:2025-02-08 Revised:2025-03-06 Accepted:2025-04-15 Online:2025-06-18 Published:2025-06-18
  • Contact: Hui Guo, Haitao Yang E-mail:guohui@iphy.ac.cn;htyang@iphy.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 62488201 and 1240041502), the Ministry of Science and Technology of China (Grant No. 2022YFA1204100), the Chinese Academy of Sciences (Grant No. XDB33030100), and the Innovation Program of Quantum Science and Technology (Grant No. 2021ZD0302700).

摘要: Two-dimensional van der Waals (vdW) magnetic materials, characterized by their tunable magnetism, spin transport properties, and remarkable quantum effects, provide significant promise for the development of efficient, low-power spintronic devices. Intriguingly, the rare earth tritelluride ($R$Te$_3$) materials have attracted great attention due to their unique magnetic structure, exotic electronic properties, multiple charge density wave (CDW), and superconductivity under pressure. Here, we report the successful synthesis of high-quality DyTe$_{3}$ single crystals using a self-flux method. DyTe$_{3}$ shows an antiferromagnetic transition at 4.5 K and demonstrates the magnetic field-induced ferromagnetism. The high-quality DyTe$_{3}$ single crystal demonstrates outstanding transport properties, featuring a high carrier mobility of approximately 1.4$\times10^{4}$ cm$^{2}\cdot$V$^{-1}\cdot$s$^{-1}$ and large linear magnetoresistance of 1300%. Furthermore, distinct Shubnikov-de Haas (SdH) oscillations are observed in DyTe$_{3}$, revealing a small Fermi pocket and an effective mass of 0.24 $m_{\rm e}$. Remarkably, the unconventional in-plane negative magnetoresistances appear along the $a$-axis below 2 T and $c$-axis until 9 T from 2 K to 17 K, which are attributed to the complex helimagnetic structures caused by CDW coupling and weak single-ion anisotropy. Our findings offer a significant platform for understanding the complex magnetoresistance behavior and quantum transport effects in $R$Te$_{3}$-type materials, holding great promise for advancing applications in electronic and spintronic devices.

关键词: in-plane negative magnetoresistance, SdH oscillations, helimagnetic, charge density wave (CDW)

Abstract: Two-dimensional van der Waals (vdW) magnetic materials, characterized by their tunable magnetism, spin transport properties, and remarkable quantum effects, provide significant promise for the development of efficient, low-power spintronic devices. Intriguingly, the rare earth tritelluride ($R$Te$_3$) materials have attracted great attention due to their unique magnetic structure, exotic electronic properties, multiple charge density wave (CDW), and superconductivity under pressure. Here, we report the successful synthesis of high-quality DyTe$_{3}$ single crystals using a self-flux method. DyTe$_{3}$ shows an antiferromagnetic transition at 4.5 K and demonstrates the magnetic field-induced ferromagnetism. The high-quality DyTe$_{3}$ single crystal demonstrates outstanding transport properties, featuring a high carrier mobility of approximately 1.4$\times10^{4}$ cm$^{2}\cdot$V$^{-1}\cdot$s$^{-1}$ and large linear magnetoresistance of 1300%. Furthermore, distinct Shubnikov-de Haas (SdH) oscillations are observed in DyTe$_{3}$, revealing a small Fermi pocket and an effective mass of 0.24 $m_{\rm e}$. Remarkably, the unconventional in-plane negative magnetoresistances appear along the $a$-axis below 2 T and $c$-axis until 9 T from 2 K to 17 K, which are attributed to the complex helimagnetic structures caused by CDW coupling and weak single-ion anisotropy. Our findings offer a significant platform for understanding the complex magnetoresistance behavior and quantum transport effects in $R$Te$_{3}$-type materials, holding great promise for advancing applications in electronic and spintronic devices.

Key words: in-plane negative magnetoresistance, SdH oscillations, helimagnetic, charge density wave (CDW)

中图分类号:  (Magnetoresistance)

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