Laser control of magnonic topological phases in antiferromagnets

Nakata, Koki; Kim, S. K.*; Takayoshi, Shintaro*

Physical Review B, 100(1), p.014421_1 - 014421_9, 2019/07

AA2019-0325.pdf:1.15MB

https://doi.org/10.1103/PhysRevB.100.014421

We study the laser control of magnon topological phases induced by the Aharonov-Casher effect in insulating antiferromagnets (AFs). Using Floquet formalism, we study nonequilibrium magnon dynamics away from the adiabatic limit and its effect on topological phenomena. Our results provide a handle to control and design magnon topological properties in the insulating AF, and thus open a new door to "photonic magnonics".