Linearly polarized light breaks the spin-sector symmetry of a d-wave altermagnet, producing Chern-insulating phases with C=±1 and switchable Faraday and Kerr rotations.
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Floquet Engineering of Topological Phases and Magneto-Optical Response in a Driven $d$-wave Altermagnet
Linearly polarized light breaks the spin-sector symmetry of a d-wave altermagnet, producing Chern-insulating phases with C=±1 and switchable Faraday and Kerr rotations.