Thermal Control of the Magnon-Photon Coupling in a Notch Filter coupled to a Yttrium-Iron-Garnet/Platinum System

Vincent Castel , Rodolphe Jeunehomme , Jamal Ben Youssef , Nicolas Vukadinovic , Alexandre Manchec , Fasil Kidane Dejene , Gerrit E. W. Bauer

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classification ❄️ cond-mat.mtrl-sci

keywords controlcouplingfiltermagnon-photonnotchplatinumsystemtemperature

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We report thermal control of mode hybridization between the ferromagnetic resonance (FMR) and a planar resonator (notch filter) working at 4.74 GHz. The chosen magnetic material is a ferrimagnetic insulator (Yttrium Iron Garnet: YIG) covered by 6 nm of platinum (Pt). A current induced heating method has been used in order to enhance the temperature of the YIG/Pt system. The device permits us to control the transmission spectra and the magnon-photon coupling strength at room temperature. These experimental findings reveal potentially applicable tunable microwave filtering function.

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Thermal Control of the Magnon-Photon Coupling in a Notch Filter coupled to a Yttrium-Iron-Garnet/Platinum System

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