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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
 

Coexistence of Memory-Resistance and Memory-Capacitance in TiO2 Solid State Devices

Authors: Iulia Salaoru, Qingjiang Li , Ali Khiat, Themistoklis Prodromakis

Published by: Published by: Nanoscale Research Letters 2014

This work exploits the coexistence of both resistance and capacitance memory effects in TiO2 based two terminal cells. Our Pt/TiO2/TiOx/Pt devices exhibit an interesting combination of hysteresis and non-zero crossing in their current-voltage (I-V) characteristic that indicate the presence of capacitive states. Our experimental results demonstrate that both resistance and capacitance states can be simultaneously set via either voltage cycling and/or voltage pulses. We argue that these states modulations occur due to bias induced reduction of the TiOx active layer via the displacement of ionic species.

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