Low-energy Resistive Random Access Memory Devices with No Need for a Compliance Current

Abstract

A novel resistive random access memory device is designed with SrTiO 3 / La 2/3 Sr 1/3 MnO 3 (LSMO)/MgAl 2 O 4 (MAO)/Cu structure, in which metallic epitaxial LSMO is employed as the bottom electrode rather than traditional metal materials. In this device, the critical external compliance current is no longer necessary due to the high self-resistance of LSMO. The LMSO bottom electrode can act as a series resistor to offer a compliance current during the set process. Besides, the device also has excellent switching features which are originated in the formation of Cu filaments under external voltage. Therefore it provides the possibility of reducing power consumption and accelerating the commercialization of resistive switching devices.