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Inspired by the recent achievements of the strong magnons- and spintextures-photons coupling via dipolar interaction, the coupling between magnonsand the local resonances of spin textures through direct exchange interactionis expected but not realized yet. In this work, we demonstrated the coherentcoupling between propagating magnons and local skyrmion resonances. Besides theRabbi coupling gap (RCG) in the frequency field dispersion, a magnonic analogof polariton gap, polaragnonic band gap (PBG), is also observed in thefrequency-wavenumber dispersion. The realization of coupling requires thegyrotropic skyrmion modes to satisfy not only their quantum number larger thanone but also their chirality opposite to that of magnons. The observed PBG andRCG can be controlled to exist within different Brillouin zones (BZs) as wellas at BZ boundaries. The coupling strength can approach the strong regime byselecting the wavenumber of propagating magnons. Our findings could provide apure magnonic platform for investigating quantum optics phenomena in quantuminformation technology.

Strong Coupling between Propagating Magnons and High-order Gyrotropic Skyrmion Modes