An experimental proof that resistance-switching memories are not memristors
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An experimental proof that resistance-switching memories are not memristors

  • Author(s): Kim, J
  • Pershin, YV
  • Yin, M
  • Datta, T
  • Ventra, M Di
  • et al.

It has been suggested that all resistive-switching memories are memristors. The latter are hypothetical, ideal devices whose resistance, as originally formulated, depends only on the net charge that traverses them. Recently, an unambiguous test has been proposed [J. Phys. D: Appl. Phys. 52, 01LT01 (2019)] to determine whether a given physical system is indeed a memristor or not. Here, we experimentally apply such a test to Cu-SiO2-based electrochemical metallization memory cells, and show that electrochemical metallization memories are not memristors. Since the particular resistance-switching memories employed in our study share similar features with many other memory cells, our findings refute the claim that all resistance-switching memories are memristors. They also cast doubts on the existence of ideal memristors as actual physical devices that can be fabricated experimentally. Our results then lead us to formulate two memristor impossibility conjectures regarding the impossibility of building a model of physical resistance-switching memories based on the memristor model.

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