Selectively dissipative and coherent couplings mediated by the interaction between antiresonance and multiple magnons
Phys. Rev. B 112, 064416 – Published 8 August, 2025
DOI: https://doi.org/10.1103/kvrx-8rjf
Abstract
We experimentally realize the selectively controllable dissipative coupling and coherent coupling induced by different magnon modes and the same antiresonance mode. It has been observed that the weaker the dynamic microwave field generated by the magnon mode in magnetic materials, the more likely dissipative coupling is to occur. Conversely, a stronger dynamic microwave field generated by the magnon mode favors coherent coupling. Based on this principle, we have designed and implemented a system that alternates between dissipative and coherent coupling. It allows microwave signals to be selectively transmitted over a large applied magnetic field range at the frequency of antiresonance. Our experimental achievements may promote the construction of new magnon devices such as a magnetic field-driven microwave switch.
