The conical shape filament growth model in unipolar resistance switching of TiO2 thin film
- 23 March 2009
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 94 (12), 122109
- https://doi.org/10.1063/1.3108088
Abstract
This study examined the relationship between the conducting filament resistance and reset voltage during the resistance switching of TiO 2 thin films assuming a filament with a conical shape. There was a critical resistance ( ∼ 20 Ω ) of the set state above and below which the filament responded differently in response to the current. Maintaining a higher set state resistance was more beneficial in achieving a more uniform reset voltage. This filament model coincides well with the localized switching behavior and the recently microscopically observed filament shape.Keywords
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