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arXiv · 2505.07605

Explosive growth of bistability in a cavity magnonic system

Meng-Xia Bi·Huawei Fan·Wenting Wu·Jing-Jing He·Ming-Liang Hu·Xiao-Hong Yan
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Abstract

We conduct a theoretical investigation into explosive growth of bistability in a cavity magnonic system incorporating magnetic nonlinearity. In this system, the coupling between the magnon and photon generates the cavity magnon polaritons. When driving the photon-like polariton mode, the bistability can undergo a sudden transition with the increase of the driving power, resulting in an explosive growth of the bistable region by several times. Conversely, driving the magnon-like polariton mode only gives rise to normal bistability. This depends on whether the minimum driving power required to generate the bistability is non-monotonic with respect to the driving frequency. In addition, despite driving only the photon-like polariton mode, the photon- and magnon-like polariton modes can show simultaneous explosive growth of the bistability in microwave transmission, owing to the light-matter interaction. Our research sheds light on the hidden side of the nonlinear cavity magnonic system and provides a potential application for cavity spintronic devices founded on this novel feature.

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Meng-Xia Bi, Huawei Fan, Wenting Wu, Jing-Jing He, Ming-Liang Hu, Xiao-Hong Yan. 2025-05-12. Explosive growth of bistability in a cavity magnonic system. https://doi.org/10.1103/physrevb.111.184309

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