Strain-Tuned Spin-Wave Interference in Micro- and Nanoscale Magnonic Interferometers

Here, we report on the experimental study of spin-wave propagation and interaction in the double-branched Mach–Zehnder interferometer (MZI) scheme. We show that the use of a piezoelectric plate (PP) with separated electrodes connected to each branch of the MZI leads to the tunable interference of th...

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Bibliographic Details
Published in:Nanomaterials
Main Authors: Andrey A. Grachev, Alexandr V. Sadovnikov, Sergey A. Nikitov
Format: Article
Language:English
Published: MDPI AG 2022-04-01
Subjects:
spin waves
magnonics
straintronics
Brillouin light scattering
Mach–Zehnder interferometer
spin-wave computing
Online Access:https://www.mdpi.com/2079-4991/12/9/1520
Description
Summary:Here, we report on the experimental study of spin-wave propagation and interaction in the double-branched Mach–Zehnder interferometer (MZI) scheme. We show that the use of a piezoelectric plate (PP) with separated electrodes connected to each branch of the MZI leads to the tunable interference of the spin-wave signal at the output section. Using a finite element method, we carry out a physical investigation of the mechanisms of the impact of distributed deformations on the magnetic properties of YIG film. Micromagnetic simulations and finite-element modelling can explain the evolution of spin-wave interference patterns under strain induced via the application of an electric field to PP electrodes. We show how the multimode regime of spin-wave propagation is used in the interferometry scheme and how scaling to the nanometer size represents an important step towards a single-mode regime. Our findings provide a simple solution for the creation of tunable spin-wave interferometers for the magnonic logic paradigm.
ISSN:2079-4991

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