Magnetoionics for Synaptic Devices and Neuromorphic Computing : Recent Advances, Challenges, and Future Perspectives
Monalisha, P. (Universitat Autònoma de Barcelona. Departament de Física)
Ameziane, Maria (Aalto University. Department of Applied Physics)
Spasojevic, Irena (Universitat Autònoma de Barcelona. Departament de Física)
Pellicer Vilà, Eva Maria (Universitat Autònoma de Barcelona. Departament de Física)
Mansell, Rhodri (Aalto University. Department of Applied Physics)
Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física)
Van Dijken, Sebastiaan (Aalto University. Department of Applied Physics)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)

Date:	2024
Abstract:	With the advent of Big Data, traditional digital computing is struggling to cope with intricate tasks related to data classification or pattern recognition. To mitigate this limitation, software-based neural networks are implemented, but they are run in conventional computers whose operation principle (with separate memory and data-processing units) is highly inefficient compared to the human brain. Brain-inspired in-memory computing is achieved through a wide variety of methods, for example, artificial synapses, spiking neural networks, or reservoir computing. However, most of these methods use materials (e. g. , memristor arrays, spintronics, phase change memories) operated with electric currents, resulting in significant Joule heating effect. Tuning magnetic properties by voltage-driven ion motion (i. e. , magnetoionics) has recently emerged as an alternative energy-efficient approach to emulate functionalities of biological synapses: potentiation/depression, multilevel storage, or transitions from short-term to long-term plasticity. In this perspective, the use of magnetoionics in neuromorphic applications is critically reviewed, with emphasis on modulating synaptic weight through: 1) control of magnetization by voltage-induced ion retrieval/insertion; and 2) control of magnetic stripe domains and skyrmions in gated magnetic thin films adjacent to solid-state ionic supercapacitors. The potential prospects in this emerging research area together with a forward-looking discussion on future opportunities are provided.
Grants:	European Commission 101054687 Agencia Estatal de Investigación PID2020-116844RB-C21 Agencia Estatal de Investigación PDC2021-121276-C31 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00651
Note:	Altres ajuts: acords transformatius de la UAB
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Small science, Vol. 4, Issue 10 (October 2024) , art. 2400133, ISSN 2688-4046

DOI: 10.1002/smsc.202400133
PMID: 40212233

16 p, 5.5 MB

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