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Time-reversal symmetry breaking type-II Weyl state in YbMnBi2

Author

Listed:
  • Sergey Borisenko

    (Leibniz IFW Dresden)

  • Daniil Evtushinsky

    (Leibniz IFW Dresden
    Institute of Physics, Ecole Polytechnique Federale Lausanne)

  • Quinn Gibson

    (Princeton University
    University of Liverpool)

  • Alexander Yaresko

    (Max-Planck-Institute for Solid State Research)

  • Klaus Koepernik

    (Leibniz IFW Dresden)

  • Timur Kim

    (Diamond Light Source)

  • Mazhar Ali

    (Princeton University)

  • Jeroen Brink

    (Leibniz IFW Dresden
    Institute for Solid State Physics, TU Dresden)

  • Moritz Hoesch

    (Diamond Light Source
    Deutsches Elektronen-Synchrotron DESY, Photon Science)

  • Alexander Fedorov

    (Leibniz IFW Dresden)

  • Erik Haubold

    (Leibniz IFW Dresden)

  • Yevhen Kushnirenko

    (Leibniz IFW Dresden)

  • Ivan Soldatov

    (Institute for Metallic Materials, Leibniz IFW Dresden
    Institute of Natural Sciences, Ural Federal University)

  • Rudolf Schäfer

    (Institute for Metallic Materials, Leibniz IFW Dresden)

  • Robert J. Cava

    (Princeton University)

Abstract

Spectroscopic detection of Dirac and Weyl fermions in real materials is vital for both, promising applications and fundamental bridge between high-energy and condensed-matter physics. While the presence of Dirac and noncentrosymmetric Weyl fermions is well established in many materials, the magnetic Weyl semimetals still escape direct experimental detection. In order to find a time-reversal symmetry breaking Weyl state we design two materials and present here experimental and theoretical evidence of realization of such a state in one of them, YbMnBi2. We model the time-reversal symmetry breaking observed by magnetization and magneto-optical microscopy measurements by canted antiferromagnetism and find a number of Weyl points. Using angle-resolved photoemission, we directly observe two pairs of Weyl points connected by the Fermi arcs. Our results not only provide a fundamental link between the two areas of physics, but also demonstrate the practical way to design novel materials with exotic properties.

Suggested Citation

  • Sergey Borisenko & Daniil Evtushinsky & Quinn Gibson & Alexander Yaresko & Klaus Koepernik & Timur Kim & Mazhar Ali & Jeroen Brink & Moritz Hoesch & Alexander Fedorov & Erik Haubold & Yevhen Kushniren, 2019. "Time-reversal symmetry breaking type-II Weyl state in YbMnBi2," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11393-5
    DOI: 10.1038/s41467-019-11393-5
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    Cited by:

    1. Cong Li & Jianfeng Zhang & Yang Wang & Hongxiong Liu & Qinda Guo & Emile Rienks & Wanyu Chen & Francois Bertran & Huancheng Yang & Dibya Phuyal & Hanna Fedderwitz & Balasubramanian Thiagarajan & Macie, 2023. "Emergence of Weyl fermions by ferrimagnetism in a noncentrosymmetric magnetic Weyl semimetal," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. Wenbin Wu & Zeping Shi & Mykhaylo Ozerov & Yuhan Du & Yuxiang Wang & Xiao-Sheng Ni & Xianghao Meng & Xiangyu Jiang & Guangyi Wang & Congming Hao & Xinyi Wang & Pengcheng Zhang & Chunhui Pan & Haifeng , 2024. "The discovery of three-dimensional Van Hove singularity," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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