Rate-limiting processes in the fast SET operation of a gapless-type Cu-Ta2O5 atomic switch | Zendy

Tohru Tsuruoka | Zendy; Tsuyoshi Hasegawa | Zendy; Ilia Valov | Zendy; Rainer Waser | Zendy; Masakazu Aono | Zendy

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Rate-limiting processes in the fast SET operation of a gapless-type Cu-Ta2O5 atomic switch

Author(s) -

Tohru Tsuruoka,

Tsuyoshi Hasegawa,

Ilia Valov,

Rainer Waser,

Masakazu Aono

Publication year - 2013

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4795140

Subject(s) - gapless playback , nucleation , materials science , limiting , voltage , pulse (music) , oxide , electrode , transient (computer programming) , switching time , amplitude , optoelectronics , atomic physics , analytical chemistry (journal) , chemistry , condensed matter physics , electrical engineering , physics , computer science , metallurgy , optics , mechanical engineering , chromatography , engineering , operating system , organic chemistry

The speed of the SET operation of a Cu/Ta2O5/Pt atomic switch from a high-resistance state to a low-resistance state was measured by transient current measurements under the application of a short voltage pulse. The SET time decreased exponentially with increasing pulse amplitude, reaching as low as 1 ns using moderate pulse voltages. This observation shows that oxide-based atomic switches hold potential for fast-switching memory applications. From a comparison with atomistic nucleation theory, Cu nucleation on the Pt electrode was found to be the likely rate-limiting process determining the SET time.

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