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Emerging research landscape of altermagnetism

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arxiv 2204.10844 v1 pith:7ETCLNIZ submitted 2022-04-22 cond-mat.mes-hall

Libor Šmejkal , Jairo Sinova , Tomas Jungwirth This is my paper · ORCID
classification cond-mat.mes-hall
keywords altermagnetismcondensed-mattermagneticmagnetizationantiferromagnetsbasicemergingferromagnets
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Magnetism is one of the largest, most fundamental, and technologically most relevant fields of condensed-matter physics. Traditionally, two basic magnetic phases have been considered -- ferromagnetism and antiferromagnetism. The breaking of the time-reversal symmetry and spin splitting of the electronic states by the magnetization in ferromagnets underpins a range of macroscopic responses in this extensively explored and exploited type of magnets. By comparison, antiferromagnets have vanishing net magnetization. This Perspective reflects on recent observations of materials hosting an intriguing ferromagnetic-antiferromagnetic dichotomy, in which spin-split spectra and macroscopic observables, akin to ferromagnets, are accompanied by antiparallel magnetic order with vanishing magnetization, typical of antiferromagnets. An unconventional non-relativistic symmetry-group formalism offers a resolution of this apparent contradiction by delimiting a third basic magnetic phase, dubbed altermagnetism. Our Perspective starts with an overview of the still emerging unique phenomenology of the phase, and of the wide array of altermagnetic material candidates. In the main part of the article, we illustrate how altermagnetism can enrich our understanding of overarching condensed-matter physics concepts, and have impact on prominent condensed-matter research areas.

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Cited by 6 Pith papers

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

  1. On the Symmetries of Anisotropic Spin Interaction Models

    cond-mat.str-el 2026-05 unverdicted novelty 7.0 of 10

    Anisotropic spin models can have exact symmetry groups outside O(3)xIsom(R^3), enforced by cohomology twists, and can host Z2 quadrupolar excitations on a spin Brillouin Klein bottle.

  2. Colour symmetry and altermagnetic-like spin textures in noncollinear antiferromagnets

    cond-mat.str-el 2025-01 conditional novelty 7.0 of 10

    Colour symmetry groups isolate the spin-rotation-invariant, spin-orbit-free component of spin textures in non-collinear antiferromagnets, shown on Mn3Ir(Ge,Si), Pb2MnO4 and Mn3GaN.

  3. Coupled Spin-Orbital $p$-Wave Magnetism via Structural and Magnetic Chirality

    cond-mat.mes-hall 2026-07 unverdicted novelty 6.5 of 10

    Spin-orbit coupling couples structural and magnetic chirality to produce two symmetry-distinct p-wave phases with distinct longitudinal conductivity signatures.

  4. 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.

  5. 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.

  6. 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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