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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Rubi, Diego
in Cooperation with on an Cooperation-Score of 37%
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Publications (3/3 displayed)
- 2024Multi-mem behavior at reduced voltages in La1/2¿Sr1/2¿Mn1/2¿Co1/2¿O3-¿ perovskite modified with Sm:Ce¿O2citations
- 2024Multi-mem behavior at reduced voltages in La 1/2 Sr 1/2 Mn 1/2 Co 1/2 O 3-x perovskite modified with Sm:Ce O 2citations
- 2023Oxygen vacancy dynamics in Pt/TiO<sub>x</sub>/TaO<sub>y</sub>/Pt memristors: exchange with the environment and internal electromigrationcitations
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article
Oxygen vacancy dynamics in Pt/TiO<sub>x</sub>/TaO<sub>y</sub>/Pt memristors: exchange with the environment and internal electromigration
Abstract
<jats:title>Abstract</jats:title><jats:p>Memristors are expected to be one of the key building blocks for the development of new bio-inspired nanoelectronics. Memristive effects in transition metal oxides are usually linked to the electromigration at the nanoscale of charged oxygen vacancies (OV). In this paper we address, for Pt/TiO<jats:sub><jats:italic>x</jats:italic></jats:sub>/TaO<jats:sub><jats:italic>y</jats:italic></jats:sub>/Pt devices, the exchange of OV between the device and the environment upon the application of electrical stress. From a combination of experiments and theoretical simulations we determine that both TiO<jats:sub><jats:italic>x</jats:italic></jats:sub> and TaO<jats:sub><jats:italic>y</jats:italic></jats:sub> layers oxidize, via environmental oxygen uptake, during the electroforming process. Once the memristive effect is stabilized (post-forming behavior) our results suggest that oxygen exchange with the environment is suppressed and the OV dynamics that drives the memristive behavior is restricted to an internal electromigration between TiO<jats:sub><jats:italic>x</jats:italic></jats:sub> and TaO<jats:sub><jats:italic>y</jats:italic></jats:sub> layers. Our work provides relevant information for the design of reliable binary oxide memristive devices.</jats:p>