Details

Autor(en) / Beteiligte

• Yu, Yiqi
• Skowronski, Marek

Titel

Observation and modelling of homogenous nucleation in GeSbTe mushroom cells during SET operation

Ist Teil von

• Journal of materials chemistry. C, Materials for optical and electronic devices, 2023-03, Vol.11 (11), p.3848-3854

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Phase change memory devices are used in applications for neuromorphic computing as artificial synapses. However, the cycle-to-cycle variability of the partial SET operations, likely associated with the inherently stochastic nature of the nucleation process, limits their performance. This work documents the homogeneous nucleation process occurring in scaled Ge 2 Sb 2 Te 5 mushroom cells by transmission electron microscopy. The experimental data have been reproduced by a finite element model allowing for the extraction of the nucleation rates of Ge 2 Sb 2 Te 5 . The crystallization mode during the SET operation in the nanoscale GST-based mushroom cell has been studied. The nucleation process detected in TEM has been quantified by modelling.