Control of magnon-photon coupling by spin torque

Anish Rai; M. Benjamin Jungfleisch

doi:10.1016/j.jmmm.2023.170558

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arXiv · 2302.08910

Control of magnon-photon coupling by spin torque

Anish Rai·M. Benjamin Jungfleisch

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Abstract

We demonstrate the influence of damping and field-like torques in the magnon-photon coupling process by classically integrating the generalized Landau-Lifshitz-Gilbert equation with RLC equation in which a phase correlation between dynamic magnetization and microwave current through combined Amp\`ere and Faraday effects are considered. We show that the gap between two hybridized modes can be controlled in samples with damping parameter in the order of $10^{-3}$ by changing the direction of the dc current density $J$ if a certain threshold is reached. Our results suggest that an experimental realization of the proposed magnon-photon coupling control mechanism is feasible in yttrium iron garnet/Pt hybrid structures.

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Anish Rai, M. Benjamin Jungfleisch. 2023-02-17. Control of magnon-photon coupling by spin torque. https://doi.org/10.1016/j.jmmm.2023.170558

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