Abstract
The reset mechanism of metal oxide RRAM has been attributed to oxygen ion migration assisted by Joule heating. Here, we present a phenomenological model to provide a unified explanation for both the unipolar and bipolar resistive switching mechanisms. Numerical simulation results reveal that the switching mode is determined by the electrode/oxide interface property. Without/with an interfacial barrier, unipolar/bipolar switching behavior is obtained. This model combines the previous thermal dissolution model and ion migration model and thus can explain many experimental observations such as the electrode-material- dependent switching polarity and the voltagetime dilemma between fast switching and long retention.
Original language | English (US) |
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Article number | 5611571 |
Pages (from-to) | 1455-1457 |
Number of pages | 3 |
Journal | IEEE Electron Device Letters |
Volume | 31 |
Issue number | 12 |
DOIs | |
State | Published - Dec 2010 |
Externally published | Yes |
Keywords
- Ion migration
- Joule heating
- resistive switching
- switching polarity
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering