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Photonic Altermagnets: Magnetic Symmetries in Photonic Structures

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arxiv 2506.23497 v1 pith:7KW3PHFB submitted 2025-06-30 physics.optics cond-mat.mtrl-sci

Photonic Altermagnets: Magnetic Symmetries in Photonic Structures

classification physics.optics cond-mat.mtrl-sci
keywords photoniccrystalspropertiesaltermagnetsofferplatformspin-splitsymmetries
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The unique physical properties of altermagnets, when transplanted to photonic systems, are anticipated to offer a new degree of freedom for engineering electromagnetic waves. Here, we show that a photonic analogue of altermagnetism can be mimicked in photonic crystals, where engineered photonic crystals can host spin space group symmetries. Our approach allows for the creation of spin-split bands and the corresponding transport properties provide an effective platform for circularly polarized light isolation without the need of geometrodynamic spin-orbit interaction. Beyond the concurrent solid-state materials, we anticipate our work to offer photonic crystals as a versatile platform to test the spin-split band properties and inspire optical designs for photospintronic applications.

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Cited by 2 Pith papers

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

  1. Multipolar Piezoelectricity and Anisotropic Surface Transport in Alterelectrics

    cond-mat.mtrl-sci 2026-04 unverdicted novelty 8.0

    Alterelectrics exhibit quadrupolar piezoelectricity, hyperbolic wave dispersion, and surface-dependent anisotropic electronic transport as an electric analog to altermagnets.

  2. Mirror-Symmetry-Enforced Photonic Altermagnet

    physics.optics 2026-06 unverdicted novelty 7.0

    A hexagonal photonic crystal with alternating chiral ellipses exhibits mirror-enforced helicity splitting, enabling tunable beam splitting and helicity filtering with output fractions above 0.85.