A Model for the Set Statistics of RRAM Inspired in the Percolation Model of Oxide Breakdown

Shibing Long, Xiaojuan Lian, C. Cagli, L. Perniola, E. Miranda, Ming Liu, J. Suñé

IEEE Electron Device Letters · 2013 · 131 citations · 17 references

Concepts

Abstract

The set voltage distribution of Pt/HfO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /Pt resistive switching memory is shown to fit well a Weibull model with Weibull slope and scale factor increasing logarithmically with the resistance measured at the set point. Gaining inspiration from the percolation model of oxide breakdown, a physics-based model for the V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">set</sub> statistics is proposed. The results of the model are completely consistent with the experimental results and demonstrate the need of a strong reset to get large Weibull slope that provides some relief to the strong requirements imposed by the set speed-read disturb dilemma.

References

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