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arXiv · 2303.05175

Antiferromagnetic resonances in superconductor-ferromagnet multilayers

I. A. Golovchanskiy·V. V. Ryazanov·V. S. Stolyarov
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Abstract

In this work, we study magnetization dynamics in superconductor-ferromagnet (S-F) thin-film multilayer. Theoretical considerations supported by the broad-band ferromagnetic resonance spectroscopy reveal development of acoustic and optic resonance modes in S-F multilayers at significantly higher frequencies in comparison to the Kittel mode of individual F-layers. These modes are formed due to antiferromagnetic-like interaction between F-layers via shared circulating superconducting currents in S-layers. The gap between resonance modes is determined by the thickness and superconducting penetration depth in S-layers. Overall, rich spectrum of S-F multilayers and its tunability opens wide prospects for application of these multialyers in magnonics as well as in various superconducting hybrid systems.

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I. A. Golovchanskiy, V. V. Ryazanov, V. S. Stolyarov. 2023-03-09. Antiferromagnetic resonances in superconductor-ferromagnet multilayers. https://doi.org/10.1103/physrevapplied.20.l021001

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