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Spin current generation in organic antiferromagnets

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arxiv 1902.02506 v1 pith:JLHZOLJS submitted 2019-02-07 cond-mat.str-el cond-mat.mes-hall

Makoto Naka , Satoru Hayami , Hiroaki Kusunose , Yuki Yanagi , Yukitoshi Motome , Hitoshi Seo This is my paper · ORCID
classification cond-mat.str-elcond-mat.mes-hall
keywords spincurrentorganicantiferromagnetscouplingeffectfieldgeneration
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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.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Momentum-Dependent Spin Splitting by Collinear Antiferromagnetic Ordering

    cond-mat.str-el 2019-08 conditional novelty 7.0 of 10

    Collinear antiferromagnetic order alone can produce momentum-dependent spin splitting without atomic spin-orbit coupling when the magnetic pattern and the inter-site hopping share the same symmetry representation.

  2. Emergence and Detection of Surface altermagnetism in KV$_2$Se$_2$O

    cond-mat.str-el 2026-08 conditional novelty 6.0 of 10

    Bulk antiferromagnetic KV2Se2O is predicted to have d-wave altermagnetic surface states and a large surface nonlinear Edelstein effect that explains existing spin-splitting observations.

  3. Highly Efficient Non-relativistic Edelstein effect in p-wave magnets

    cond-mat.mes-hall 2024-11 conditional novelty 6.0 of 10

    P-wave magnets (time-reversal-preserving, inversion-breaking coplanar magnets) show a large anisotropic non-relativistic Edelstein effect, with CeNiAsO predicted to be 25 times more efficient than prior materials.

  4. Symmetry, microscopy and spectroscopy signatures of altermagnetism

    cond-mat.mtrl-sci 2025-06 unverdicted

    A review of the symmetry, microscopic origin, and detection of altermagnetism, a collinear magnetic phase with alternating spin polarization in momentum space.

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