Floquet-engineered laser control switches between helical and chiral magnon edge states and their associated Nernst or thermal Hall effects in insulating antiferromagnets.
(1)] is invariant under a gauge transformation [9] and the gauge invariance is specific to only magnons, i.e
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Laser control of magnonic topological phases in antiferromagnets
Floquet-engineered laser control switches between helical and chiral magnon edge states and their associated Nernst or thermal Hall effects in insulating antiferromagnets.