Titel
Reflection-less width-modulated magnonic crystal
Autor*in
Pascal Frey
Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern
Autor*in
Aleksei A. Nikitin
Department of Physical Electronics and Technology, St. Petersburg Electrotechnical University
Autor*in
Dmytro A. Bozhko
Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern
... show all
Abstract
The interest in artificial magnetic media such as magnonic crystals increased substantially in recent years due to their potential applications in information processing at microwave frequencies. The main features of these crystals are the presence of band gaps in the spin-wave spectra, usually formed due to Bragg reflections of spin-waves on the artificially created periodic structures. Here, we study spin-wave propagation in longitudinally magnetized width- and thickness-modulated yttrium iron garnet waveguides by means of Brillouin light scattering and microwave spectroscopy techniques. It is found that the width modulated crystal does not manifest noticeable Bragg reflections, but still demonstrates a pronounced band gap in its transmission characteristic. The phenomenon can be explained by the destructive interference between different frequency-degenerated spin-wave modes excited by the crystal. Such a reflection-less crystal is promising for future design of multi-element magnonic devices.
Stichwort
Applied physicsSpintronics
Objekt-Typ
Sprache
Englisch [eng]
Erschienen in
Titel
Communications Physics
Band
3
Ausgabe
1
ISSN
2399-3650
Erscheinungsdatum
2020
Publication
Springer Science and Business Media LLC
Projekt
Kod / Identifikator
678309
Projekt
Kod / Identifikator
801055
Erscheinungsdatum
2020
Zugänglichkeit
Rechteangabe
© The Author(s) 2020

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