Neuromorphic weighted sums with magnetic skyrmions
(2025) SPIE Optics and Photonics 2025 — Location: San Deigo, USA (3.August.2025)
Files
No attached file found for this publication.
Details
- Authors
- Abstract
- We explored the properties of magnetic skyrmions—nanoscale, stable isolated magnetic textures—and used them to mimic the role of biological neurotransmitters in a neural network. Taking advantage of the particle-like behavior of skyrmions, which makes them countable and hence summable, enabled us to perform a basic neuromorphic computing operation: the weighted summation of synaptic signals. We demonstrate the precise control of the number of skyrmions, determined by electrical pulse inputs multiplied by the track synaptic weights. Magneto-ionic effects enable non-volatile and reversible tuning of magnetic properties, allowing gate voltage manipulation of synaptic weights. Detection of the skyrmion number is accomplished through non-perturbative anomalous Hall voltage measurements. We experimentally validate the weighted sum operation using two electrical inputs in a crossbar array configuration with two tracks. This ensures efficient execution of the fundamental weighted sum operation. Our experimental demonstration is scalable to accommodate multiple inputs and outputs using a crossbar array design, potentially approaching the energy efficiency observed in biological systems.
- Affiliations
Citations
da Câmara Santa Clara Gomes, T., Yanis Sassi, Dedalo Sanz-Hernandez, Sachin Krishnia, Marie-Blandine Martin, Pierre Seneor, Tanvi Bhatnagar-Schöffmann, Dafiné Ravelosona, Damien Querlioz, Liza Herrera-Diez, Vincent Cros, Julie Grollier, & Nicolas Reyren. (2025). Neuromorphic weighted sums with magnetic skyrmions. Proc. SPIE PC13586, Spintronics XVIII, PC135860T. https://doi.org/10.1117/12.3063303 (Original work published 2025)