Frequency-dependent stimulated and post-stimulated voltage control of magnetism in transition metal nitrides : towards brain-inspired magneto-ionics
Tan, Zhengwei (Universitat Autònoma de Barcelona. Departament de Física)
de Rojas, Julius (Universitat Autònoma de Barcelona. Departament de Física)
Martins, Sofia (Universitat Autònoma de Barcelona. Departament de Física)
Lopeandía Fernández, Aitor (Institut Català de Nanociència i Nanotecnologia)
Quintana Puebla, Alberto (Institut de Ciència de Materials de Barcelona)
Cialone, Matteo (CNR-SPIN Genova (Italy))
Herrero-Martín, Javier (ALBA Laboratori de Llum de Sincrotró)
Meersschaut, Johan (IMEC (Belgium))
Vantomme, André (KU Leuven. Quantum Solid State Physics (Belgium))
Costa-Krämer, José L. (Instituto de Micro y Nanotecnología)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Menéndez Dalmau, Enric (Universitat Autònoma de Barcelona. Departament de Física)

Date:	2023
Abstract:	Magneto-ionics, which deals with the change of magnetic properties through voltage-driven ion migration, is expected to be one of the emerging technologies to develop energy-efficient spintronics. While a precise modulation of magnetism is achieved when voltage is applied, much more uncontrolled is the spontaneous evolution of magneto-ionic systems upon removing the electric stimuli (i. e. , post-stimulated behavior). Here, we demonstrate a voltage-controllable N ion accumulation effect at the outer surface of CoN films adjacent to a liquid electrolyte, which allows for the control of magneto-ionic properties both during and after voltage pulse actuation (i. e. , stimulated and post-stimulated behavior, respectively). This effect, which takes place when the CoN film thickness is below 50 nm and the voltage pulse frequency is at least 100 Hz, is based on the trade-off between generation (voltage ON) and partial depletion (voltage OFF) of ferromagnetism in CoN by magneto-ionics. This novel effect may open opportunities for new neuromorphic computing functions, such as post-stimulated neural learning under deep sleep.
Grants:	European Commission 875018 European Commission 861145 European Commission 824096 Agencia Estatal de Investigación MAT2017-86357-C3-1-R Agencia Estatal de Investigación PID2020-116844RB-C21 Agencia Estatal de Investigación PDC2021-121276-C3 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-292 Agència de Gestió d'Ajuts Universitaris i de Recerca 2018/LLAV-00032 Ministerio de Ciencia e Innovación CEX2019-000917-S Ministerio de Ciencia e Innovación FJC2019-039780-I Ministerio de Economía y Competitividad CSIC13-4E-1794
Note:	Altres ajuts: funding from CM (project S2018/NMT-4291 TEC2SPACE)
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, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Materials Horizons, Vol. 10, Issue 1 (January 2023) , p. 88-96, ISSN 2051-6355

DOI: 10.1039/d2mh01087a
PMID: 36305823

9 p, 1.4 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > The ALBA Synchrotron
Articles > Research articles
Articles > Published articles