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arXiv · 1412.5809

Exchange Magnon-Polaritons in Microwave Cavities

Yunshan Cao·Peng Yan·Hans Huebl·Sebastian T. B. Goennenwein·Gerrit E. W. Bauer
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Abstract

We formulate a scattering theory to study magnetic films in microwave cavities beyond the independent-spin and rotating wave approximations of the Tavis-Cummings model. We demonstrate that strong coupling can be realized not only for the ferromagnetic resonance (FMR) mode, but also for spin wave resonances (SWRs); the coupling strengths are mode dependent and decrease with increasing mode index. The strong coupling regime can be also accessed electrically by spin pumping into a metal contact.

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Yunshan Cao, Peng Yan, Hans Huebl, Sebastian T. B. Goennenwein, Gerrit E. W. Bauer. 2015-03-24. Exchange Magnon-Polaritons in Microwave Cavities. https://doi.org/10.1103/physrevb.91.094423

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