Theoretical investigation of kinetics of a Cu2 S -based gap-type atomic switch

Alpana Nayak*, Tohru Tsuruoka, Kazuya Terabe, Tsuyoshi Hasegawa, Masakazu Aono

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Atomic switch, operating by forming and dissolving a metal-protrusion in a nanogap, shows an exponentially large bias dependence and a faster switching with increasing temperature and decreasing off-resistance. These major characteristics are explained with a simple model where the electrochemical potential at the subsurface of solid-electrolyte electrode determines the precipitation rate of metal atoms and the electric-field in the nanogap strongly affects the formation of metal-protrusion. Theoretically calculated switching time, based on this model, well reproduced the measured properties of a Cu 2 S -based atomic switch as a function of bias, temperature and off-resistance, providing a significant physical insight into the mechanism.

Original languageEnglish
Article number233501
JournalApplied Physics Letters
Issue number23
Publication statusPublished - 2011 Jun 6
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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