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Photonic Altermagnets: Magnetic Symmetries in Photonic Structures
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Photonic Altermagnets: Magnetic Symmetries in Photonic Structures
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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.
Forward citations
Cited by 2 Pith papers
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Multipolar Piezoelectricity and Anisotropic Surface Transport in Alterelectrics
Alterelectrics exhibit quadrupolar piezoelectricity, hyperbolic wave dispersion, and surface-dependent anisotropic electronic transport as an electric analog to altermagnets.
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Mirror-Symmetry-Enforced Photonic Altermagnet
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.
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