Dynamic electromagnonic crystals based on ferrite-ferroelectric thin film multilayers
Year of publication
2024
Authors
Nikitin, Aleksei A.; Kuznetsov, Nikolai; Van Dijken, Sebastiaan; Lähderanta, Erkki
Abstract
Magnons, the quanta of the oscillations of localized electron spins, are a powerful tool for information transport and processing of microwave signals. Owing to the challenge of energy efficient spin-wave control on small time- and space scales, dynamic magnonic crystals have been proposed. Their distinct feature is the possibility to toggle on and off the spatial periodicity of the magnetic waveguide that allows one to realize the unusual signal processing functions. The miniaturization of magnonic circuits, reduction in energy consumption, and fast operation are important possibilities of these artificial crystals. These can be achieved in ferrite-ferroelectric (multiferroic) heterostructures, where strong coupling of magnons and microwave photons constitutes quasiparticles called electromagnons. Using both a theoretical approach and microwave measurements, we report on successful dynamic control of electromagnonic band structures in artificial thin film crystals via application of a voltage to the grid electrode located on a ferroelectric film. A promising functionality of the proposed waveguiding structures arises from two major factors: (i) low energy consumptions due to the thin ferroelectric layer, and (ii) pronounced rejection bands caused by a gradual change of the dielectric permittivity.
Show moreOrganizations and authors
Publication type
Publication format
Article
Parent publication type
Journal
Article type
Original article
Audience
ScientificPeer-reviewed
Peer-ReviewedMINEDU's publication type classification code
A1 Journal article (refereed), original researchPublication channel information
Journal
Publisher
Volume
109
Issue
2
Article number
024440
Pages
1-12
ISSN
Publication forum
Publication forum level
2
Open access
Open access in the publisher’s service
No
Open access of publication channel
Partially open publication channel
Self-archived
Yes
Other information
Fields of science
Physical sciences
Internationality of the publisher
International
Language
English
International co-publication
No
Co-publication with a company
No
DOI
10.1103/PhysRevB.109.024440
The publication is included in the Ministry of Education and Culture’s Publication data collection
Yes