Strong coupling between magnons confined in a single magnonic cavity
arXiv:2004.11058 · doi:10.1063/5.0005011
Abstract
Strong coupling between magnons and cavity photons was studied extensively for quantum electrodynamics in the past few years. Recently, the strong magnon-magnon coupling between adjacent layers in magnetic multilayers has been reported. However, the strongly coupled magnons confined in a single nanomagnet remains to be revealed. Here, we report the interaction between different magnon modes in a single magnonic cavity. The intermodel coupling between edge and center magnon modes in the strong coupling regime was approached with a maximum coupling strength of 0.494 GHz and cooperativity of 60.1 with a damping of 1X10-3. Furthermore, it is found that the coupling strength is highly dependent on the geometric parameters of the magnonic cavity. Our findings could greatly enrich the still evolving field of quantum magnonics.
References in corpus (10)
- Strongly coupled magnons and cavity microwave photons
- Hybrid quantum systems based on magnonics
- High Cooperativity Cavity QED with Magnons at Microwave Frequencies
- Spin Pumping in Electrodynamically Coupled Magnon-Photon Systems
- Exchange Magnon-Polaritons in Microwave Cavities
- Origin of in-plane uniaxial magnetic anisotropy in CoFeB amorphous ferromagnetic thin-films
- Time-resolved investigation of magnetization dynamics of arrays of non-ellipsoidal nanomagnets with a non-uniform ground state
- Magnetization dynamics and its scattering mechanism in thin CoFeB films with interfacial anisotropy
- Strong Exciton-Photon Coupling in a Nanographene Filled Microcavity
- Frequency-Division Multiplexing in Magnonic Logic Networks Based on Caustic-Like Spin-Wave Beams