Self-induced Floquet states via three-wave processes in synthetic antiferromagnets

2025/07/09 by T. Devolder, Joo-Von Kim, Devolder, Thibaut +1 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Physics of Superconductivity and Magnetism #Topological Materials and Phenomena

paper · doi:10.48550/arxiv.2507.06886

openalex publication_date 2025/07/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a mechanism for self-induced Floquet states involving acoustic and optical modes in synthetic antiferromagnets. By driving optical modes off-resonantly with radio frequency fields in the canted antiferromagnetic state, limit cycles arising from the predator-prey dynamics of the acoustic and optical mode populations can appear. The cyclic growth and decay of these mode populations induce a time-periodic modulation of the canted state, which subsequently generates Floquet states. These states appear as a rich frequency comb in the power spectrum of magnetization oscillations.

Citations

• Spin waves involved in three-magnon splitting in synthetic antiferromagnets
• Role of non-reciprocity in spin-wave channeling
• Self-induced Floquet magnons in magnetic vortices
• Floquet-engineering the exceptional points in parity-time-symmetric magnonics
• Band structure engineering and non-equilibrium dynamics in Floquet topological insulators

Cited by

• Temporal magnetic interfaces reveal damping-induced spin-wave amplification near the stripe-domain transition in ultrathin films with DMI

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