Thermal control of the magnon-photon coupling in a notch filter coupled to a yttrium iron garnet/platinum system

Castel, Vincent; Jeunehomme, Rodolphe; Youssef, J. Ben; Vukadinovic, N.; Manchec, Alexandre; Dejene, Fasil Kidane; Bauer, G.

doi:10.1103/physrevb.96.064407

Cited by 26 publications

(24 citation statements)

References 28 publications

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“…Therefore, collectively excited modes (i.e., magnons) in ferromagnets or ferrimagnets, being coupled to elementary excitations of electromagnetic waves (photons), have increasingly been studied in a variety of hybrid structures of two or more different systems [4][5][6][7][8][9][10][11][12]. In particular, the rapid development of both spintronics and the design/fabrication technologies of microwave resonators has stimulated further studies of photon-magnon coupling using a low-damping magnetic material, e.g., yttrium iron garnet (YIG: Y3Fe5O12), and high-quality microwave resonators [13][14][15][16][17][18][19][20][21]. In earlier studies, the interaction (coupling) between the photon and magnon modes usually has been demonstrated by showing the modes' splitting at and near their common resonant frequency within the so-called anti-crossing or the level repulsion of two coupled modes [13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Abnormal anticrossing effect in photon-magnon coupling

et al. 2019

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We report the experimental demonstration of an abnormal, opposite anti-crossing effect in a photon-magnon-coupled system that consists of an Yttrium Iron Garnet film and an inverted pattern of split-ring resonator structure (noted as ISRR) in a planar geometry. It is found that the normal shape of anti-crossing dispersion typically observed in photon-magnon coupling is changed to its opposite anti-crossing shape just by changing the position/orientation of the ISRR's split gap with respect to the microstrip line axis along which ac microwave currents are applied. Characteristic features of the opposite anti-crossing dispersion and its linewidth evolution are analyzed with the help of analytical derivations based on electromagnetic interactions. The observed opposite anti-crossing dispersion is ascribed to the compensation of both intrinsic damping and coupling-induced damping in the magnon modes. This compensation is achievable by controlling the relative strength and phase of oscillating magnetic fields generated from the ISRR's split gap and the microstrip feeding line. The position/orientation of an ISRR's split gap provides a robust means of controlling the dispersion shape of anti-crossing and its damping in a photon-magnon coupling, thereby offering more opportunity for advanced designs of microwave devices. a) Correspondence and requests for materials should be addressed to S.-K. K sangkoog@snu.ac.kr

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Section: Introductionmentioning

confidence: 99%

Abnormal anticrossing effect in photon-magnon coupling

et al. 2019

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“…The coefficient η ≤ 1 describes the spatial overlap and polarization matching conditions between the microwave field and the magnon mode. In a previous work, we demonstrated an exceptional point in a notch filter coupled to a YIG/Platinum system by thermally control the magnetic damping (magnetic losses by analogy with β) with a current-induced heating method [18]. The effective strength found in this latter work were higher compared to the present work.…”

Section: Methodsmentioning

confidence: 40%

Strong Coupling of Magnons to Microwave Photons in Three-Dimensional Printed Resonators

et al. 2019

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We report on ferromagnetic resonant mode hybridization in re-entrant cavities made with a commercial three-dimensional (3D) printer, followed by conventional 3D metalization with copper and tin. The cavity volume was only 7% that of a standard cavity resonating at the same frequency, while maintaining a high quality factor. Simulations were in very good agreement. We obtained an effective coupling of about 40 MHz in two cavities at room temperature. These experimental results demonstrate the utility of tunable filters based on complex 3D printed cavities.

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“…It also realizes (quantum) information transfer between a localized spin system and a distant superconducting qubit [24]. The emphasis of this field has been on studies of the strong coupling limit in the weakly excited regime [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41], i.e. that described by the coupling of two harmonic oscillators.…”

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confidence: 99%

Nonlinear magnon polaritons

Lee¹,

Yamamoto²,

Umeda³

et al. 2022

Preprint

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We experimentally and theoretically demonstrate that nonlinear spin-wave interactions suppress the hybrid magnon-photon quasiparticle or "magnon polariton" in microwave spectra of an yttrium iron garnet film detected by an on-chip split-ring resonator. We observe a strong coupling between the Kittel magnon and microwave cavity mode in terms of an anti-crossing as a function of magnetic fields at low microwave input powers, but a complete closing of the anti-crossing gap at high powers. The experimental results are well explained by a theoretical model including the three-magnon decay of the Kittel magnon into spin waves. The gap closure originates from the saturation of the ferromagnetic resonance above the Suhl instability threshold by a coherent back reaction from the spin waves.

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Thermal control of the magnon-photon coupling in a notch filter coupled to a yttrium iron garnet/platinum system

Cited by 26 publications

References 28 publications

Abnormal anticrossing effect in photon-magnon coupling

Abnormal anticrossing effect in photon-magnon coupling

Strong Coupling of Magnons to Microwave Photons in Three-Dimensional Printed Resonators

Nonlinear magnon polaritons

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