A Fully Coupled Multi-Physics Model to Simulate Phase Change Memory Operations in Ge-rich Ge$_2$Sb$_2$Te$_5$ Alloys

TL;DR

This paper introduces a comprehensive multi-physics model combining phase field and electro-thermal simulations to accurately replicate the behavior of Ge-rich Ge$_2$Sb$_2$Te$_5$ phase change memories during operation.

Contribution

It presents a novel fully coupled multi-physics model that integrates phase change dynamics with electro-thermal effects for Ge-rich Ge$_2$Sb$_2$Te$_5$ alloys.

Findings

Successfully reproduces experimental memory operation behaviors

Demonstrates accurate simulation of phase change processes

Provides a tool for designing improved phase change memory devices

Abstract

A self-consistent model for the simulation of Ge-rich Ge$_2$Sb$_2$Te$_5$ phase change memories is presented. Combining the multi-phase field model and a phase-aware electro-thermal solver, it reproduces the multi-physics behavior of the material. Simulations of memory operations are performed to demonstrate its ability to reproduce experimental observations.