Three-dimensional numerical simulation of switching dynamics for cylindrical-shaped phase change memory

Yiming Li*, Chih Hong Hwang, Yi Ting Kuo, Hui Wen Cheng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Novel chalcogenide-based phase change memory (PCM) is a promising candidate for next-generation non-volatile solid-state memory technology for its high resistance contrast, better endurance and writing speeds than flash memory. PCM cell stores data by a thermally induced phase transition between conductive poly crystalline (set) and resistive amorphous (reset) states, in a thin film of chalcogenide materials, such as GeSbTe (GST) alloy. Therefore, the determination of the maximum temperature of GST material is crucial in design and technology of PCM. In this study, a three-dimensional electro-thermal time-domain simulation is conducted for dynamic thermal analysis of the cylindrical PCMs, where the structure GST is a cone with different cone angle, ranging from 90° to 45°. Our preliminary result shows the relation between contact size of GST and required programming current for GST phase transition. The GST with 90° angle exhibits the smallest required programming current than the others. The angle and contact size of GST will modify the distribution of temperature and alters the maximum temperature of the GST material. This study quantitatively estimates the structure effect on phase transition of PCM and physically provides an insight into design and technology of PCMs.

Original languageEnglish
Title of host publicationProceedings of the 11th IEEE International Conference on Computational Science and Engineering, CSE Workshops 2008
Pages324-327
Number of pages4
DOIs
StatePublished - 2008
Event11th IEEE International Conference on Computational Science and Engineering, CSE Workshops 2008 - Sao Paulo, SP, Brazil
Duration: 16 Jul 200818 Jul 2008

Publication series

NameProceedings of the 11th IEEE International Conference on Computational Science and Engineering, CSE Workshops 2008

Conference

Conference11th IEEE International Conference on Computational Science and Engineering, CSE Workshops 2008
CountryBrazil
CitySao Paulo, SP
Period16/07/0818/07/08

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