Bimeron Crystals by a Linearly Polarized AC Electric Field in Frustrated Magnets

Abstract

We theoretically propose a method to generate topological spin textures by irradiating a classical spin system with a linearly polarized AC electric field. To this end, we investigate non-equilibrium steady states in a classical Heisenberg model with frustrated exchange interactions on a two-dimensional triangular lattice by numerically solving the Landau-Lifshitz-Gilbert equation at zero temperature. Our results reveal that the linearly polarized AC electric-field irradiation induces a topological phase transition from a single-Q spiral state to a bimeron crystal with the skyrmion number of one in the low-frequency regime. Furthermore, we show that the obtained bimeron crystal remains relatively stable against both easy-axis and easy-plane single-ion anisotropies.

5 pages with 4 figures

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Cited by in corpus (2)

• Topological phase transitions by time-dependent electromagnetic fields in frustrated magnets: Role of dynamical and static magnetic fields
• Effects of crystal field and momentum-based frustrated exchange interactions on multiorbital square skyrmion lattice