The effect of electrode size on memristor properties: An experimental and theoretical study

• Published in: 2012 IEEE International Conference on Electronics Design, Systems and Applications (ICEDSA) pp. 80 - 85
• Main Authors: Gale, E., de Lacy Costello, B., Adamatzky, A.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.11.2012
• ISBN: 9781467321624; 1467321621
• ISSN: 2159-2047; 2159-2055
• DOI: 10.1109/ICEDSA.2012.6507821

The width of the electrodes is not included in the current phenomenological models of memristance, but is included in the memory-conservation (mem-con) theory of memristance. An experimental study of the effect of changing the top electrode width was performed on titanium dioxide sol-gel memristors. It was demonstrated that both the on resistance, R on , and the off resistance, R off , decreased with increasing electrode size. The memory function part of the mem-con model could fit the relationship between Ron and electrode size. Similarly, the conservation function fits the change in R off , The experimentally measured hysteresis did not fit the phenomenological model's predictions. Instead the size of the hysteresis increased with increasing electrode size, and correlated well to decreasing R on .