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Demonstration of 3D vertical RRAM with ultra low-leakage, high-selectivity and self-compliance memory cells

Developing high performance self-selective cell (SSC) is one of the most critical issues of the integration of 3D vertical RRAM (V-RRAM). In this work, a four-layer V-RRAM array, with high performance HfO2/mixed ionic and electronic conductor (MIEC) bilayer SSC, was demonstrated for the first time. Several salient features were achieved, including ultra-low half-select leakage (<;0.1 pA), very high nonlinearity (>103), low operation current (nA level), self-compliance, high endurance (>107), and robust read/write disturbance immunity.