Projected Mushroom Type Phase-Change Memory

Syed Ghazi Sarwat, Timothy M. Philip, Ching Tzu Chen, Benedikt Kersting, Robert L. Bruce, Cheng Wei Cheng, Ning Li, Nicole Saulnier, Matthew BrightSky, Abu Sebastian

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Abstract

Phase-change memory devices have found applications in in-memory computing where the physical attributes of these devices are exploited to compute in places without the need to shuttle data between memory and processing units. However, nonidealities such as temporal variations in the electrical resistance have a detrimental impact on the achievable computational precision. To address this, a promising approach is projecting the phase configuration of phase change material onto some stable element within the device. Here, the projection mechanism in a prominent phase-change memory device architecture, namely mushroom-type phase-change memory, is investigated. Using nanoscale projected Ge2Sb2Te5 devices, the key attributes of state-dependent resistance, drift coefficients, and phase configurations are studied, and using them how these devices fundamentally work is understood.

Original languageEnglish (US)
Article number2106547
JournalAdvanced Functional Materials
Volume31
Issue number49
DOIs
StatePublished - Dec 2 2021

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Biomaterials
  • General Materials Science
  • Condensed Matter Physics
  • Electrochemistry

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