Abstract
Uniformity issue and data retention are two severe challenges for resistive random access memory (RRAM). The wide dispersion of high resistance state (HRS) is the main cause of uniformity issue. In this work, a novel programming scheme named gate induced resistive switching is proposed to improve the reliability of RRAM in one transistor and one resistor (1T1R) structure. Owing to the effective elimination of the intermediate resistance states, the uniformity of HRS is greatly improved. Moreover, the new program scheme tends to form single conductive filament (CF) during the SET process. Compared with multi-CFs, the reduced surface area of single-CF for copper ions diffusing from CF leads to better data retention of low resistance state (LRS).
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