TiO x -based self-rectifying memory device for crossbar WORM memory array applications*

Author:

Fu Li-Ping,Song Xiao-Qiang,Gao Xiao-Ping,Wu Ze-Wei,Chen Si-Kai,Li Ying-Tao

Abstract

Resistive switching with a self-rectifying feature is one of the most effective solutions to overcome the crosstalk issue in a crossbar array. In this paper, a memory device based on Pt/TiO x /W structure with self-rectifying property is demonstrated for write-once-read-many-times (WORM) memory application. After programming, the devices exhibit excellent uniformity and keep in the low resistance state (LRS) permanently with a rectification ratio as high as 104 at ± 1 V. The self-rectifying resistive switching behavior can be attributed to the Ohmic contact at TiO x /W interface and the Schottky contact at Pt/TiO x interface. The results in this paper demonstrate the potential application of TiO x -based WORM memory device in crossbar arrays.

Publisher

IOP Publishing

Subject

General Physics and Astronomy

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