Bicircularly polarized light can drive altermagnets with Rashba spin-orbit coupling through topological phase transitions and tune their Fermi surfaces and spin textures via the relative phase of the two beams.
This phase transition is also apparent from the Berry curvature plot around the Γ point for differentrat fixedR, for both kinds ofd-wave altermagnets
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Tunable topology, Hall response, and spin-textures in bicircularly polarized light illuminated altermagnets
Bicircularly polarized light can drive altermagnets with Rashba spin-orbit coupling through topological phase transitions and tune their Fermi surfaces and spin textures via the relative phase of the two beams.