Magnon-induced phononic Chern insulator
High-frequency artificial phononic crystals offer a low-loss platform compatible with on-chip integration, yet realizing Chern phononic phases at GHz frequencies remains challenging. Here, we propose a magnon-induced phononic Chern insulator in a honeycomb phononic crystal hybridized with ferromagnetic islands at the hexagon centers. A circularly polarized Kittel mode couples to the surrounding phonons with a phase winding, which breaks time-reversal symmetry and opens a full Chern gap. In the large-detuning regime, this mechanism leads to an effective Haldane-type phononic model with magnon-induced complex hopping. By tuning the magnon-phonon interaction, the full hybrid system accesses ...
| Authors | Rui-Chang Shen, Yihao Yang, Haoran Xue |
|---|---|
| Primary category | cond-mat.mes-hall |
| Published | 27 August 2026 |
| Last updated at source | 27 August 2026 |
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