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Minimal Models and Transport Properties of Unconventional $p$-Wave Magnets

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arxiv 2405.15823 v2 pith:6EY2E5LR submitted 2024-05-23 cond-mat.mes-hall

Bj{o}rnulf Brekke , Pavlo Sukhachov , Hans Gl{o}ckner Giil , Arne Brataas , Jacob Linder This is my paper · ORCID
classification cond-mat.mes-hall
keywords magnetswavemodelunconventionalanalyticaleffectivespinminimal
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abstract

New unconventional compensated magnets with a $p$-wave spin polarization protected by a composite time-reversal translation symmetry have been proposed in the wake of altermagnets. To facilitate the experimental discovery and applications of these unconventional magnets, we construct an effective analytical model. The effective model is based on a minimal tight-binding model for unconventional $p$-wave magnets that clarifies the relation to other magnets with $p$-wave spin-polarized bands. One of the most prominent advantages of our analytical model is the possibility to employ various analytical approaches while capturing essential features of $p$-wave magnets. We illustrate the effective model by evaluating the tunneling conductance in junctions with $p$-wave magnets, revealing a large magnetoresistance, spin filtering, and anisotropic bulk spin conductivity beyond linear response despite the absence of a net magnetization. These results show that unconventional $p$-wave magnets offer several useful functionalities, broadening the material selection for spintronics devices.

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Cited by 5 Pith papers

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

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    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.

  2. Quantum transport theory for unconventional magnets: Interplay of altermagnetism and p-wave magnetism with superconductivity

    cond-mat.supr-con 2024-12 conditional novelty 7.0 of 10

    A symmetry-based quantum transport theory for unconventional magnets, unified with superconductivity, yields testable predictions for spin-polarized currents, proximity-induced magnetization, and spin-galvanic effects.

  3. Dynamical Polarization from Hidden Spin and Orbital Textures in p-Wave Magnets

    cond-mat.mes-hall 2026-07 conditional novelty 6.0 of 10

    Optically driven p-wave magnets develop a resonantly enhanced ac spin polarization at the 2J_sd exchange gap and a rectified, polarization-controlled dc orbital polarization invisible to period-averaged treatments.

  4. The fate of $p$-wave spin polarization in helimagnets with Rashba spin-orbit coupling

    cond-mat.mes-hall 2024-12 conditional novelty 6.0 of 10

    Antiferromagnetically coupled helimagnetic chains preserve p-wave spin polarization under Rashba spin-orbit coupling for any helix period, while single chains only do so for even periods.

  5. 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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