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Dr Themis Prodromakis

University of Southampton
Nano Group, Southampton Nanofabrication Centre
Southampton, SO17 1BJ, UK
+44 (0)23 8059 8803
t.prodromakis@soton.ac.uk
 

Pulse-induced resistive and capacitive switching in TiO2 thin film devices

Authors: Iulia Salaoru, Ali Khiat, Qingjiang Li, Radu Berdan, and Themistoklis Prodromakis

Published by: Applied Physics Letters 103, 233513 (2013); doi: 10.1063/1.4840316

In this study, we exploit the non-zero crossing current-voltage characteristics exhibited by nanoscale TiO2 based solid-state memristors. We demonstrate that the effective resistance and capacitance of such two terminal devices can be modulated simultaneously by appropriate voltage pulsing. Our results prove that both resistive and capacitive switching arise naturally in nanoscale Pt/TiO2/Pt devices under an external bias, this behaviour being governed by the formation/disruption of conductive filaments through the TiO2 thin film.

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