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Spin current generation in organic antiferromagnets

Author

Listed:
  • Makoto Naka

    (Waseda University)

  • Satoru Hayami

    (Hokkaido University)

  • Hiroaki Kusunose

    (Meiji University)

  • Yuki Yanagi

    (Tohoku University)

  • Yukitoshi Motome

    (The University of Tokyo)

  • Hitoshi Seo

    (RIKEN
    RIKEN)

Abstract

Spin current–a flow of electron spins without a charge current–is an ideal information carrier free from Joule heating for electronic devices. The celebrated spin Hall effect, which arises from the relativistic spin-orbit coupling, enables us to generate and detect spin currents in inorganic materials and semiconductors, taking advantage of their constituent heavy atoms. In contrast, organic materials consisting of molecules with light elements have been believed to be unsuited for spin current generation. Here we show that a class of organic antiferromagnets with checker-plate type molecular arrangements can serve as a spin current generator by applying a thermal gradient or an electric field, even with vanishing spin-orbit coupling. Our findings provide another route to create a spin current distinct from the conventional spin Hall effect and open a new field of spintronics based on organic magnets having advantages of small spin scattering and long lifetime.

Suggested Citation

  • Makoto Naka & Satoru Hayami & Hiroaki Kusunose & Yuki Yanagi & Yukitoshi Motome & Hitoshi Seo, 2019. "Spin current generation in organic antiferromagnets," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12229-y
    DOI: 10.1038/s41467-019-12229-y
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    Cited by:

    1. Hiroki Koizumi & Yuichi Yamasaki & Hideto Yanagihara, 2023. "Quadrupole anomalous Hall effect in magnetically induced electron nematic state," Nature Communications, Nature, vol. 14(1), pages 1-7, December.
    2. Ding-Fu Shao & Shu-Hui Zhang & Ming Li & Chang-Beom Eom & Evgeny Y. Tsymbal, 2021. "Spin-neutral currents for spintronics," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    3. Song-Bo Zhang & Lun-Hui Hu & Titus Neupert, 2024. "Finite-momentum Cooper pairing in proximitized altermagnets," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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