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 Ampère 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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