中国物理B ›› 2023, Vol. 32 ›› Issue (7): 76501-076501.doi: 10.1088/1674-1056/acc80c

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Transport properties of CrP

Xuebo Zhou(周学博)1,2, Ping Zheng(郑萍)2, Wei Wu(吴伟)2,†, Yu Sui(隋郁)1,3,‡, and Jianlin Luo(雒建林)2,4,5,§   

  1. 1 School of Physics, Harbin Institute of Technology, Harbin 150001, China;
    2 Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, Harbin 150001, China;
    4 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
    5 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • 收稿日期:2023-03-07 修回日期:2023-03-10 接受日期:2023-03-28 出版日期:2023-06-15 发布日期:2023-06-29
  • 通讯作者: Wei Wu, Yu Sui, Jianlin Luo E-mail:welyman@iphy.ac.cn;suiyu@hit.edu.cn;jlluo@iphy.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12134018, 11921004, and 11634015), the National Key Research and Development Program of China (Grant Nos. 2022YFA1602800, 2021YFA1401800, 2017YFA0302901, 2017YFA0302903, and 2022YFA1402203), the Strategic Priority Research Program and Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant No. XDB33010100), and the Synergetic Extreme Condition User Facility (SECUF).

Transport properties of CrP

Xuebo Zhou(周学博)1,2, Ping Zheng(郑萍)2, Wei Wu(吴伟)2,†, Yu Sui(隋郁)1,3,‡, and Jianlin Luo(雒建林)2,4,5,§   

  1. 1 School of Physics, Harbin Institute of Technology, Harbin 150001, China;
    2 Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    3 Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, Harbin 150001, China;
    4 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;
    5 Songshan Lake Materials Laboratory, Dongguan 523808, China
  • Received:2023-03-07 Revised:2023-03-10 Accepted:2023-03-28 Online:2023-06-15 Published:2023-06-29
  • Contact: Wei Wu, Yu Sui, Jianlin Luo E-mail:welyman@iphy.ac.cn;suiyu@hit.edu.cn;jlluo@iphy.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12134018, 11921004, and 11634015), the National Key Research and Development Program of China (Grant Nos. 2022YFA1602800, 2021YFA1401800, 2017YFA0302901, 2017YFA0302903, and 2022YFA1402203), the Strategic Priority Research Program and Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant No. XDB33010100), and the Synergetic Extreme Condition User Facility (SECUF).

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摘要： CrP has many exotic physical properties due to a four-fold degenerate band crossing at the Y point of the Brillouin zone, which is protected by the nonsymmorphic symmetry of the space group. We carried out the heat capacity, electrical and thermal transport measurements on CrP and extracted the electron thermal conductivity. Due to the difference in energy and momentum relaxation time during electron-phonon inelastic scattering, the normalized Lorentz number decreases below about 160 K. Below 25.6 K, the normalized Lorentz number begins to recover, which is due to the dominance of elastic scattering between electrons and defects at low temperatures.

关键词: CrP, thermal transport, Wiedemann-Franz law

Abstract: CrP has many exotic physical properties due to a four-fold degenerate band crossing at the Y point of the Brillouin zone, which is protected by the nonsymmorphic symmetry of the space group. We carried out the heat capacity, electrical and thermal transport measurements on CrP and extracted the electron thermal conductivity. Due to the difference in energy and momentum relaxation time during electron-phonon inelastic scattering, the normalized Lorentz number decreases below about 160 K. Below 25.6 K, the normalized Lorentz number begins to recover, which is due to the dominance of elastic scattering between electrons and defects at low temperatures.

Key words: CrP, thermal transport, Wiedemann-Franz law

中图分类号:  (Thermal properties of crystalline solids)

  • 65.40.-b