Emerging memories

In phase-change memory (PCM), what is the phenomenon in which the resistance of the amorphous state gradually increases over time?

  1. AStiction
  2. BResistance drift
  3. CTransient enhanced diffusion
Show answer and explanation

Answer: B. Resistance drift

The amorphous phase of PCM relaxes slightly over time, and its resistance gradually rises. This is called resistance drift. It makes resistance levels harder to distinguish when multiple levels are stored per cell, so read methods are adapted to compensate.

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