Tunable magnonic crystal in a hybrid superconductor–ferrimagnet nanostructure

One of the most intriguing properties of magnonic systems is their reconfigurability, where an external magnetic field alters the static magnetic configuration to influence magnetization dynamics. In this paper, we present an alternative approach to tunable magnonic systems. We studied theoretically...

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Bibliographic Details
Published in:Scientific reports 2024-10, Vol.14 (1), p.25594-12, Article 25594
Main Authors: Kharlan, Julia, Szulc, Krzysztof, Kłos, Jarosław W., Centała, Grzegorz
Format: Article
Language:English
Subjects:
639/766/119/1003
639/766/119/2793
639/766/119/544
639/766/119/997
Anisotropy
Crystals
Finite element method
Humanities and Social Sciences
Hybrid system
Influence
Localization
Magnetic fields
Magnonic crystal
Magnonics
multidisciplinary
Propagation
Science
Science (multidisciplinary)
Spin waves
Superconductivity
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Summary:One of the most intriguing properties of magnonic systems is their reconfigurability, where an external magnetic field alters the static magnetic configuration to influence magnetization dynamics. In this paper, we present an alternative approach to tunable magnonic systems. We studied theoretically and numerically a magnonic crystal induced within a uniform magnetic layer by a periodic magnetic field pattern created by the sequence of superconducting strips. We showed that the spin-wave spectrum can be tuned by the inhomogeneous stray field of the superconductor in response to a small uniform external magnetic field. Additionally, we demonstrated that modifying the width of superconducting strips and separation between them leads to the changes in the internal field which are unprecedented in conventional magnonic structures. The paper presents the results of semi-analytical calculations for realistic structures, which are verified by finite-element method computations.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-75492-0