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Published on: March 7, 2018
Memristive and neuromorphic behavior in a Li(x)CoO2 nanobattery
V H Mai1, A Moradpour2, P Auban Senzier2
11] Laboratoire de Génie Électrique de Paris, CNRS-UMR 8507, Universités UPMC et Paris-Sud, Supélec, F-91192 Gif-sur-Yvette, France [2] Institut d'Électronique Fondamentale, CNRS-UMR 8622, Université Paris-Sud, 91405 Orsay, France.
Abstract:
The phenomenon of resistive switching (RS), which was initially linked to non-volatile resistive memory applications, has recently also been associated with the concept of memristors, whose adjustable multilevel resistance characteristics open up unforeseen perspectives in cognitive computing. Herein, we demonstrate that the resistance states of Li(x)CoO2 thin film-based metal-insulator-metal (MIM) solid-state cells can be tuned by sequential programming voltage pulses, and that these resistance states are dramatically dependent on the pulses input rate, hence emulating biological synapse plasticity. In addition, we identify the underlying electrochemical processes of RS in our MIM cells, which also reveal a nanobattery-like behavior, leading to the generation of electrical signals that bring an unprecedented new dimension to the connection between memristors and neuromorphic systems. Therefore, these LixCoO2-based MIM devices allow for a combination of possibilities, offering new perspectives of usage in nanoelectronics and bio-inspired neuromorphic circuits.
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