Atomic switch: Atom/ion movement controlled devices for beyond von-Neumann computers

Tsuyoshi Hasegawa, Kazuya Terabe, Tohru Tsuruoka, Masakazu Aono

Research output: Contribution to journalArticle

218 Citations (Scopus)

Abstract

An atomic switch is a nanoionic device that controls the diffusion of metal ions/atoms and their reduction/oxidation processes in the switching operation to form/annihilate a conductive path. Since metal atoms can provide a highly conductive channel even if their cluster size is in the nanometer scale, atomic switches may enable downscaling to smaller than the 11 nm technology node, which is a great challenge for semiconductor devices. Atomic switches also possess novel characteristics, such as high on/off ratios, very low power consumption and non-volatility. The unique operating mechanisms of these devices have enabled the development of various types of atomic switch, such as gap-type and gapless-type two-terminal atomic switches and three-terminal atomic switches. Novel functions, such as selective volatile/nonvolatile, synaptic, memristive, and photo-assisted operations have been demonstrated. Such atomic switch characteristics can not only improve the performance of present-day electronic systems, but also enable development of new types of electronic systems, such as beyond von- Neumann computers. An atomic switch is a nanoionic-device that controls the diffusion of metal ions/atoms and their reduction/oxidation processes in the switching operation to form/annihilate a conductive path. We review various atomic switches, such as the gap-type and the gapless-type two-terminal atomic switches and three-terminal atomic switches, as well as the novel functions of these devices, such as selective volatile/nonvolatile, synaptic, memristive, and photo-assisted operations.

Original languageEnglish
Pages (from-to)252-267
Number of pages16
JournalAdvanced Materials
Volume24
Issue number2
DOIs
Publication statusPublished - 2012 Jan 10
Externally publishedYes

Fingerprint

Switches
Ions
Atoms
Metal ions
Oxidation
Semiconductor devices
Electric power utilization
Metals

Keywords

  • atomic switches
  • electrochemical switches
  • nanodevices
  • nanoionics

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Atomic switch : Atom/ion movement controlled devices for beyond von-Neumann computers. / Hasegawa, Tsuyoshi; Terabe, Kazuya; Tsuruoka, Tohru; Aono, Masakazu.

In: Advanced Materials, Vol. 24, No. 2, 10.01.2012, p. 252-267.

Research output: Contribution to journalArticle

Hasegawa, Tsuyoshi ; Terabe, Kazuya ; Tsuruoka, Tohru ; Aono, Masakazu. / Atomic switch : Atom/ion movement controlled devices for beyond von-Neumann computers. In: Advanced Materials. 2012 ; Vol. 24, No. 2. pp. 252-267.
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