Antiferromagnetic Resonances in Superconductor-Ferromagnet Multilayers
I.A. Golovchanskiy, V.V. Ryazanov, V.S. Stolyarov
DOI 10.1103/PhysRevApplied.20.L021001 · Physical Review Applied
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Abstract
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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.7 | Pressure not reported | unknown |
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.9 | Pressure not reported | unknown |
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9 | Pressure not reported | unknown |
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