Journal
JOURNAL OF APPLIED PHYSICS
Volume 127, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/5.0005011
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Funding
- National Natural Science Foundation of China (NNSFC) [11704191]
- Natural Science Foundation of Jiangsu Province of China [BK20171026]
- Jiangsu Specially Appointed Professor, and the Six-Talent Peaks Project in Jiangsu Province of China [XYDXX-038]
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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 0.494GHz 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.
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