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Non-saturating quantum magnetization in Weyl semimetal TaAs

Author

Listed:
  • Cheng-Long Zhang

    (Peking University)

  • C. M. Wang

    (Southern University of Science and Technology
    Shenzhen Key Laboratory of Quantum Science and Engineering
    Shanghai Normal University)

  • Zhujun Yuan

    (Peking University)

  • Xitong Xu

    (Peking University)

  • Guangqiang Wang

    (Peking University)

  • Chi-Cheng Lee

    (Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
    National University of Singapore)

  • Li Pi

    (Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of the Chinese Academy of Sciences)

  • Changying Xi

    (Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of the Chinese Academy of Sciences)

  • Hsin Lin

    (Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore
    National University of Singapore)

  • Neil Harrison

    (National High Magnetic Field Laboratory, Los Alamos National Laboratory, MS E536)

  • Hai-Zhou Lu

    (Southern University of Science and Technology
    Shenzhen Key Laboratory of Quantum Science and Engineering
    Center for Quantum Computing, Pengcheng Laboratory)

  • Jinglei Zhang

    (Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of the Chinese Academy of Sciences)

  • Shuang Jia

    (Peking University
    Collaborative Innovation Center of Quantum Matter
    CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences)

Abstract

Detecting the spectroscopic signatures of relativistic quasiparticles in emergent topological materials is crucial for searching their potential applications. Magnetometry is a powerful tool for fathoming electrons in solids, by which a clear method for discerning relativistic quasiparticles has not yet been established. Adopting the probes of magnetic torque and parallel magnetization for the archetype Weyl semimetal TaAs in strong magnetic field, we observed a quasi-linear field dependent effective transverse magnetization and a non-saturating parallel magnetization when the system enters the quantum limit. Distinct from the saturating magnetic responses for non-relativistic quasiparticles, the non-saturating signals of TaAs in strong field is consistent with our newly developed magnetization calculation for a Weyl fermion system in an arbitrary angle. Our results establish a high-field thermodynamic method for detecting the magnetic response of relativistic quasiparticles in topological materials.

Suggested Citation

  • Cheng-Long Zhang & C. M. Wang & Zhujun Yuan & Xitong Xu & Guangqiang Wang & Chi-Cheng Lee & Li Pi & Changying Xi & Hsin Lin & Neil Harrison & Hai-Zhou Lu & Jinglei Zhang & Shuang Jia, 2019. "Non-saturating quantum magnetization in Weyl semimetal TaAs," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09012-4
    DOI: 10.1038/s41467-019-09012-4
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    Cited by:

    1. T. Cichorek & Ł. Bochenek & J. Juraszek & Yu. V. Sharlai & G. P. Mikitik, 2022. "Detection of relativistic fermions in Weyl semimetal TaAs by magnetostriction measurements," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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