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Mixed topological semimetals driven by orbital complexity in two-dimensional ferromagnets

Author

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  • Chengwang Niu

    (Shandong University
    Forschungszentrum Jülich and JARA)

  • Jan-Philipp Hanke

    (Forschungszentrum Jülich and JARA
    Johannes Gutenberg University Mainz)

  • Patrick M. Buhl

    (Forschungszentrum Jülich and JARA)

  • Hongbin Zhang

    (Technische Universität Darmstadt)

  • Lukasz Plucinski

    (Forschungszentrum Jülich and JARA)

  • Daniel Wortmann

    (Forschungszentrum Jülich and JARA)

  • Stefan Blügel

    (Forschungszentrum Jülich and JARA)

  • Gustav Bihlmayer

    (Forschungszentrum Jülich and JARA)

  • Yuriy Mokrousov

    (Forschungszentrum Jülich and JARA
    Johannes Gutenberg University Mainz)

Abstract

The concepts of Weyl fermions and topological semimetals emerging in three-dimensional momentum space are extensively explored owing to the vast variety of exotic properties that they give rise to. On the other hand, very little is known about semimetallic states emerging in two-dimensional magnetic materials, which present the foundation for both present and future information technology. Here, we demonstrate that including the magnetization direction into the topological analysis allows for a natural classification of topological semimetallic states that manifest in two-dimensional ferromagnets as a result of the interplay between spin-orbit and exchange interactions. We explore the emergence and stability of such mixed topological semimetals in realistic materials, and point out the perspectives of mixed topological states for current-induced orbital magnetism and current-induced domain wall motion. Our findings pave the way to understanding, engineering and utilizing topological semimetallic states in two-dimensional spin-orbit ferromagnets.

Suggested Citation

  • Chengwang Niu & Jan-Philipp Hanke & Patrick M. Buhl & Hongbin Zhang & Lukasz Plucinski & Daniel Wortmann & Stefan Blügel & Gustav Bihlmayer & Yuriy Mokrousov, 2019. "Mixed topological semimetals driven by orbital complexity in two-dimensional ferromagnets," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10930-6
    DOI: 10.1038/s41467-019-10930-6
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    Cited by:

    1. Ying-Jiun Chen & Jan-Philipp Hanke & Markus Hoffmann & Gustav Bihlmayer & Yuriy Mokrousov & Stefan Blügel & Claus M. Schneider & Christian Tusche, 2022. "Spanning Fermi arcs in a two-dimensional magnet," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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