Low-Energy-Consumption Three-Valued Memory Device Inspired by Solid-State Batteries

摘要

We report the creation of a low-energy-consumption three-valued memory device based on the switching of open-circuit voltages. This device consists of a stack of Li, Li3PO4 solid electrolyte, and Ni electrode films. We observed reversible voltage switching between high, intermediate, and low opencircuit voltages. According to the scaling law, the energy required to switch a device is estimated to be 8.8 x 10(-)(11) J/mu m(2) and this value is almost 1/50 of that of a typical dynamic random access memory. Both the high- and low-voltage states converged to the intermediate-voltage state, indicating that the intermediate-voltage state is the most stable metastable state.