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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
Published on: May 23, 2017
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Strain-Tuned Spin-Wave Interference in Micro- and Nanoscale Magnonic Interferometers
Andrey A Grachev1, Alexandr V Sadovnikov1, Sergey A Nikitov1,2
1Saratov State University, 410012 Saratov, Russia.
Nanomaterials (Basel, Switzerland)
|May 14, 2022
Summary
This study demonstrates tunable spin-wave interference in a Mach-Zehnder interferometer (MZI) using a piezoelectric plate (PP). This research offers a pathway for developing advanced magnonic logic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Spin waves are fundamental to magnonics, offering potential for low-power information processing.
- Mach-Zehnder interferometers (MZIs) are key components for wave manipulation and signal processing.
- Controlling spin-wave propagation and interference is crucial for realizing magnonic devices.
Purpose of the Study:
- To experimentally investigate spin-wave propagation and interaction within a double-branched Mach-Zehnder interferometer (MZI).
- To demonstrate tunable interference of spin-wave signals by utilizing a piezoelectric plate (PP) with separated electrodes.
- To explore the potential of this tunable MZI for advancing the magnonic logic paradigm.
Main Methods:
- Experimental setup involving a double-branched MZI with a piezoelectric plate (PP).
- Application of electric fields to PP electrodes to induce strain and modify magnetic properties.
- Finite element method (FEM) for physical investigation of strain effects on Yttrium Iron Garnet (YIG) films.
- Micromagnetic simulations to analyze spin-wave interference patterns.
Main Results:
- Achieved tunable interference of spin-wave signals at the MZI output by applying electric fields to the PP.
- Demonstrated that distributed deformations, induced by electric fields, significantly impact the magnetic properties of YIG films.
- Observed evolution of spin-wave interference patterns under strain, explained by micromagnetic and FEM simulations.
- Showcased the use of the multimode regime in the interferometry scheme and highlighted nanometer scaling for a single-mode regime.
Conclusions:
- The developed MZI scheme with a PP provides a simple and effective method for tunable spin-wave interference.
- Strain-induced modulation of magnetic properties offers a viable control mechanism for spin-wave devices.
- This work represents a significant step towards realizing practical tunable spin-wave interferometers for magnonic logic applications.
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