Topological switching in bilayer magnons via electrical control

作者：Xue‐Qing Wan, Quanchao Du, Jinlian Lu, Zhenlong Zhang, Jinyang Ni, Lei Zhang, Zhijun Jiang, L. Bellaïche · 发表于：Physical review. B./Physical review. B · 年份：2025 · DOI：10.1103/l5hq-gzyv · 被引用次数：3 · 研究领域：Topological Materials and Phenomena、Magnetic properties of thin films、Mechanical and Optical Resonators

Topological magnons hold promise for lossless information processing, but their electrical control remains challenging due to charge neutrality. Here, the authors propose a general strategy for electrically controlling topological magnons in bilayer ferromagnets with strong spin-layer coupling. An applied vertical electric field modulates intralayer Heisenberg exchanges between layers, which competes with Dzyaloshinskii-Moriya interaction, enabling precise manipulation of magnon band topology and nonreciprocity. Furthermore, this mechanism strongly couples with external magnetic fields, unveiling new perspectives on magnetoelectric coupling in charge-neutral quasiparticles.