Hybrid Magnonics for Short-Wavelength Spin Waves Facilitated by a Magnetic Heterostructure
Hybrid Magnonics for Short-Wavelength Spin Waves Facilitated by a Magnetic Heterostructure
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DOI：
10.1103/physrevapplied.17.044034
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发表时间：
2022-03
影响因子：
4.6
通讯作者：
Jerad Inman;Y. Xiong;Rao Bidthanapally;S. Louis;V. Tyberkevych;H. Qu;J. Sklenar;V. Novosad;Yi Li;Xufeng Zhang;Wei Zhang
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作者：
Jerad Inman;Y. Xiong;Rao Bidthanapally;S. Louis;V. Tyberkevych;H. Qu;J. Sklenar;V. Novosad;Yi Li;Xufeng Zhang;Wei Zhang
近年来对混合磁振学的研究一直受到铁磁共振模式的长磁振子波长的限制。在一个由平面腔和磁性双分子层组成的多模磁子系统中，研究了250 nm波长的磁子与微波光子的杂化。两磁性层中磁振子模式的耦合，即坡莫合金（Py）中的均匀模式和YIG中的垂直驻自旋波（pssw）之间的耦合，是激发短波长的pssw的有效手段，并进一步与微波谐振器的光子模式杂交。所证明的磁子-光子耦合接近超强耦合，甚至可以在零偏场附近实现。各自的磁振子子系统。杂化的磁振子模式通过磁子-光子耦合g p进一步耦合到耗散率κ p的谐振腔。谐振器通过κ e与波导总线（馈线）耦合。
Recent research on hybrid magnonics has been restricted by the long magnon wavelengths of the ferromagnetic resonance modes. We present an experiment on the hybridization of 250-nm-wavelength magnons with microwave photons in a multimode magnonic system consists of a planar cavity and a magnetic bilayer. The coupling between magnon modes in the two magnetic layers, i.e., the uniform mode in Permalloy (Py) and the perpendicular standing spin waves (PSSWs) in YIG, serves an effective means for exciting short-wavelength PSSWs, which is further hybridized with the photon mode of the microwave resonator. The demonstrated magnon-photon coupling approaches the superstrong coupling regime, and can even be achieved near zero bias field. of the respective magnon subsystems. The hybridized magnon modes further couple to a resonator with a dissipation rate κ p , via a magnon-photon coupling g p . The resonator is coupled to a waveguide bus (feedline), via κ e .