Quantized conductance and neuromorphic behavior of a gapless-type Ag-Ta2O5 atomic switch

Tohru Tsuruoka, Tsuyoshi Hasegawa, Kazuya Terabe, Masakazu Aono

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We investigated quantization behavior in conductance of an Ag/Ta2O5/Pt gapless-type atomic switch. Stepwise increases and decreases in the conductance were observed when small positive and negative bias voltages were applied to the Ag electrode, respectively, where each step corresponds to the conductance of a single atomic point contact. The conductance level could also be controlled by applying voltage pulses with varied amplitudes. Furthermore, when the interval time of consecutive input pulses was turned, we also observed long-term potentiation behavior similar to that of biological synapses. These results indicate that the oxide-based, gapless-type atomic switch has potential for use as a building block of neural computing systems.

Original languageEnglish
JournalJournal of Mechanics
Issue number3
Publication statusPublished - 2013 Apr 22
Externally publishedYes


  • memory
  • nanoscale
  • oxide

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics


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