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Switching magnon chirality in artificial ferrimagnet

Author

Listed:
  • Yahui Liu

    (Peking University)

  • Zhengmeng Xu

    (Peking University)

  • Lin Liu

    (Peking University)

  • Kai Zhang

    (Peking University)

  • Yang Meng

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Yuanwei Sun

    (Peking University
    Peking University)

  • Peng Gao

    (Peking University
    Peking University)

  • Hong-Wu Zhao

    (Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

  • Qian Niu

    (University of Science and Technology of China)

  • J. Li

    (Peking University)

Abstract

Chirality, an intrinsic degree of freedom, has been barely exploited as the information carriers in data transmission, processing, computing, etc. Recently the magnons in antiferromagnets were proposed to carry both right-handed and left-handed chiralities, shedding a light on chirality-based spintronics in which chirality-based computing architectures and chiral magnonic devices may become feasible. However, the practical platform for chirality-based spintronics remains absent yet. Here we report an artificial ferrimagnetic Py/Gd/Py/Gd/Py/Pt multilayer by which the switching, reading, and modulation of magnon chirality are demonstrated. In particular, the coexisting resonance modes of ferromagnetic and antiferromagnetic characteristics permit the high adjustability and easy control of magnon chirality. As a main result, we unambiguously demonstrated that Py precessions with opposite chiralities pump spin currents of opposite spin polarizations into the Pt layer. Our result manifests the chirality as an independent degree of freedom and illustrates a practical magnonic platform for exploiting chirality, paving the way for chirality-based spintronics.

Suggested Citation

  • Yahui Liu & Zhengmeng Xu & Lin Liu & Kai Zhang & Yang Meng & Yuanwei Sun & Peng Gao & Hong-Wu Zhao & Qian Niu & J. Li, 2022. "Switching magnon chirality in artificial ferrimagnet," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28965-7
    DOI: 10.1038/s41467-022-28965-7
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    References listed on IDEAS

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    1. Jin Lan & Weichao Yu & Jiang Xiao, 2017. "Antiferromagnetic domain wall as spin wave polarizer and retarder," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
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    Cited by:

    1. Mejd Aures BENLALA, 2023. "Exploring Risks and Issues Related to Policy Making and Regulation in FinTech," Perspectives of Law and Public Administration, Societatea de Stiinte Juridice si Administrative (Society of Juridical and Administrative Sciences), vol. 12(2), pages 249-255, June.

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