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.
The spin Chern-like and 7 M X Γ Y M Γ −8 −6 −4 −2 0 2 4 6 8 E/v open solid dashed QSH (a) M X Γ Y M Γ closed C=-1 (b) M X Γ Y M Γ closed C=+1 (c) M X Γ Y M Γ open T rivial (d) FIG
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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.