On the Optimal ON/OFF Resistance Ratio for Resistive Switching Element in One-Selector One-Resistor Crosspoint Arrays

摘要

This letter investigates the impact of resistive switching element (RSE) parameters on the read performance of a two-terminal one-selector one-resistor cell. SPICE array simulation results show that the reducing improves the read margin (RM) but trades off with power consumption (). While increasing improves the RM, too large a value leads to RM degradation when exceeds an optimal value. Therefore, choosing ratio optimally is needed to maximize the RM while balancing . A highly nonlinear selector increases the optimal ratio. However, further increasing the RSE toward higher optimal ratio has only limited impact on the RM.