Multiphysics Computation for Resistive Random Access Memories With Different Metal Oxides
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2021-12-08 |
| Journal | IEEE Transactions on Electron Devices |
| Authors | Tan-Yi Li, Wenchao Chen, Da‐Wei Wang, Hao Xie, Qiwei Zhan |
| Institutions | National Engineering Research Center of Electromagnetic Radiation Control Materials, Zhejiang University |
| Citations | 6 |
Abstract
Section titled “Abstract”In this article, we use an in-house finite element method (FEM)-based parallel computing simulator to model multiphysics processes of resistive random access memories (RRAMs). These RRAMs are based on six different metal oxides, including TiO <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>x</sub> , NiO <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>x</sub> , HfO <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>x</sub> , WO <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>x</sub> , ZrO <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>x</sub> , and TaO <sub xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>x</sub> . In a single RRAM cell, the resistance ratio, reset voltage, reset current, reset power, and temperature are numerically compared. In the RRAM array, the resistance ratio, the minimum feature size (FS) to avoid bit loss, temperature, and oxygen vacancy density are obtained and discussed. The advantages of the six metal oxides-based RRAMs are analyzed based on their physical parameters, including diffusivity, electrical conductivity, and thermal conductivity. Numerical results reveal that thermal crosstalk effects are more severe when the FSs decrease, even the inactive cell can be transferred from a low-resistance state (LRS) into a high-resistance state (HRS). A crossbar array with a diamond heat sink is proposed to suppress the thermal crosstalk effect.