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Related Experiment Video

Updated: Oct 11, 2025

Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics

Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics

Published on: February 5, 2020

Surface acoustic wave controlled skyrmion-based synapse devices.

Chao Chen¹, Tao Lin¹, Jianteng Niu¹

¹Fert Beijing Institute, MIIT Key Laboratory of Spintronics, School of Integrated Circuit Science and Engineering, Beihang University, Beijing 100191, People's Republic of China.

|December 1, 2021

Summary

This summary is machine-generated.

We demonstrate controlling magnetic skyrmions with surface acoustic waves for neuromorphic computing. This method offers a novel approach to creating low-power computing systems by manipulating skyrmion properties.

Keywords:

artificial synapse magnetic skyrmion neuromorphic computing surface acoustic wave

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Last Updated: Oct 11, 2025

Fabrication of Nanoheight Channels Incorporating Surface Acoustic Wave Actuation via Lithium Niobate for Acoustic Nanofluidics

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Published on: February 5, 2020

Fabrication of Surface Acoustic Wave Devices on Lithium Niobate

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Published on: June 18, 2020

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

Microparticle Manipulation by Standing Surface Acoustic Waves with Dual-frequency Excitations

Published on: August 21, 2018

Area of Science:

Spintronics
Neuromorphic Computing
Materials Science

Background:

Magnetic skyrmions are topologically stable, nanoscale spin structures ideal for information carriers in neuromorphic computing.
Current methods for skyrmion manipulation face challenges in efficiency and control.

Purpose of the Study:

To propose and investigate the control of magnetic skyrmions using electric-field-excited surface acoustic waves (SAWs) for neuromorphic applications.
To explore the relationship between SAW amplitude and skyrmion creation for synaptic weight emulation.
To demonstrate neuromorphic functionalities like plasticity using SAW-induced skyrmion dynamics.

Main Methods:

Micromagnetic simulations were employed to model the interaction between surface acoustic waves and magnetic skyrmions.
Systematic investigation of skyrmion creation efficiency across a range of magnetic parameters.
Simulation of sequential SAW excitation to emulate synaptic plasticity.

Main Results:

Skyrmion creation count, emulating synaptic weight, increases monotonically with SAW amplitude.
Optimal magnetic parameters for efficient skyrmion creation were identified.
Demonstration of short-term plasticity and long-term potentiation through controlled skyrmion excitation by SAWs.

Conclusions:

Electric-field-excited surface acoustic waves provide a viable method for controlling magnetic skyrmions in neuromorphic devices.
This approach offers a pathway towards developing novel, low-power computing systems.
The findings highlight the potential of SAWs for advanced spintronic computing paradigms.