Antiferromagnetic Resonances in Superconductor-Ferromagnet Multilayersстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 20 февраля 2024 г.
Аннотация:In this work, we study the magnetization dynamics in a superconductor-ferromagnet (S-F) thin-film multilayer. Theoretical considerations supported by broadband ferromagnetic resonance spectroscopy reveal the 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 antiferromagneticlike interactions between F layers via shared circulating superconducting currents in the S layers. The gap between resonance modes is determined by the thickness and superconducting penetration depth in the S layers. Overall, the rich spectrum of S-F multilayers and its tunability may open up wide prospects for application of these multilayers in magnonics as well as in various superconducting hybrid systems.