中国物理B ›› 2023, Vol. 32 ›› Issue (12): 127303-127303.doi: 10.1088/1674-1056/acd10a

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Magnetic and magnetotransport properties of layered TaCoTe2 single crystals

Ming Mei(梅明)1,2,†, Zheng Chen(陈正)1,†, Yong Nie(聂勇)1,2, Yuanyuan Wang(王园园)1,2, Xiangde Zhu(朱相德)1,‡, Wei Ning(宁伟)1,§, and Mingliang Tian(田明亮)1,3   

  1. 1 Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei 230031, China;
    2 Department of Physics, University of Science and Technology of China, Hefei 230031, China;
    3 School of Physics, Anhui University, Hefei 230601, China
  • 收稿日期:2023-03-13 修回日期:2023-04-28 接受日期:2023-04-28 出版日期:2023-11-14 发布日期:2023-11-14
  • 通讯作者: Xiangde Zhu, Wei Ning E-mail:xdzhu@hmfl.ac.cn;ningwei@hmfl.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No.2021YFA1600201), the National Natural Science Foundation of China (Grant Nos. U19A2093, U2032214, and U2032163), Collaborative Innovation Program of Hefei Science Center, CAS (Grant No.2019HSC-CIP 001), Youth Innovation Promotion Association of CAS (Grant No.2021117), the HFIPS Director's Fund (Grant No.YZJJQY202304), and the CASHIPS Director's Fund (Grant No.E26MMG71131). A portion of this work was supported by the High Magnetic Field Laboratory of Anhui Province.

Magnetic and magnetotransport properties of layered TaCoTe2 single crystals

Ming Mei(梅明)1,2,†, Zheng Chen(陈正)1,†, Yong Nie(聂勇)1,2, Yuanyuan Wang(王园园)1,2, Xiangde Zhu(朱相德)1,‡, Wei Ning(宁伟)1,§, and Mingliang Tian(田明亮)1,3   

  1. 1 Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei 230031, China;
    2 Department of Physics, University of Science and Technology of China, Hefei 230031, China;
    3 School of Physics, Anhui University, Hefei 230601, China
  • Received:2023-03-13 Revised:2023-04-28 Accepted:2023-04-28 Online:2023-11-14 Published:2023-11-14
  • Contact: Xiangde Zhu, Wei Ning E-mail:xdzhu@hmfl.ac.cn;ningwei@hmfl.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No.2021YFA1600201), the National Natural Science Foundation of China (Grant Nos. U19A2093, U2032214, and U2032163), Collaborative Innovation Program of Hefei Science Center, CAS (Grant No.2019HSC-CIP 001), Youth Innovation Promotion Association of CAS (Grant No.2021117), the HFIPS Director's Fund (Grant No.YZJJQY202304), and the CASHIPS Director's Fund (Grant No.E26MMG71131). A portion of this work was supported by the High Magnetic Field Laboratory of Anhui Province.

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摘要： We present the synthesis of TaCoTe2 single crystals and a systematic investigation of the physical properties of bulk crystals and thin flakes. The crystal shows a semiconducting behavior with temperature decreasing from room temperature and turns to a metallic behavior below 38 K. When the magnetic field is applied, the temperature-dependent resistivity curves show an upturn below 10 K. Furthermore, we find that the TaCoTe2 single crystal can be easily exfoliated from the bulk crystal by the micromechanical exfoliation method. Our measurements suggest that the nanoflakes have properties similar to those of the bulk crystal when the thickness is lowered to 18 nm.

关键词: two-dimensional materials, magnetism, electronic transport, nanoflakes

Abstract: We present the synthesis of TaCoTe2 single crystals and a systematic investigation of the physical properties of bulk crystals and thin flakes. The crystal shows a semiconducting behavior with temperature decreasing from room temperature and turns to a metallic behavior below 38 K. When the magnetic field is applied, the temperature-dependent resistivity curves show an upturn below 10 K. Furthermore, we find that the TaCoTe2 single crystal can be easily exfoliated from the bulk crystal by the micromechanical exfoliation method. Our measurements suggest that the nanoflakes have properties similar to those of the bulk crystal when the thickness is lowered to 18 nm.

Key words: two-dimensional materials, magnetism, electronic transport, nanoflakes

中图分类号:  (Electronic transport in nanoscale materials and structures)

  • 73.63.-b
68.65.-k (Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties) 75.70.Ak (Magnetic properties of monolayers and thin films) 75.75.Cd (Fabrication of magnetic nanostructures)