Spin-wave phase modulation using magnetic domain walls in dipolarly coupled structures for non-volatile magnonic computation
Open accessAbstract
A controllable phase shifter is a key component for spin-wave–based logic and information-processing devices. Here, we propose a domain-wall-position–controlled spin-wave phase shifter that exploits dipolar coupling between two closely spaced waveguides to enable continuous phase tuning over a range approaching 360° while keeping the spin-wave amplitude constant. Using micromagnetic simulations, we model a bias-free hybrid structure composed of a nanoscale waveguide magnetostatically coupled to a half-ring-shaped structure, both made from bismuth-doped yttrium iron garnet with strong perpendicular magnetic anisotropy. Displacing a domain wall in the half-ring modulates the dispersion relation in the adjacent straight waveguide due to the changed magnetostatic interaction, providing a compact and dynamically reconfigurable phase-shifting mechanism. This approach offers precise and non-volatile control over spin-wave propagation and is compatible with energy-efficient magnonic logic architectures.
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- Authors
- Mortada, H., Pirro, P., & Hamadeh, A.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau (DE)
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2026-06-08
- Volume
- 128
- Issue
- 23
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W7163550472
- Cited by
- 0
- References
- 0
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Licence
- cc-by
- Locations
- Applied Physics Letters (publishedVersion)
- arXiv (Cornell University) (submittedVersion, cc-by)
- arXiv (Cornell University) (cc-by)
- Funders
- European Research Council (101042439)
- Deutsche Forschungsgemeinschaft (TRR 173 -268565370)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Magnetic properties of thin films
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Magnetic Properties and Applications
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Magneto-Optical Properties and Applications
- Keywords
- magnetic domain walls, dipolar coupling, magnon dispersion, magnetostatic coupling, perpendicular magnetic anisotropy
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