Evolution of the shape of the conducting channel in complementary resistive switching transition metal oxides

Nanoscale
Kyung Jean YoonCheol Seong Hwang

Abstract

Ultimate control of the defect distribution and local conduction path in a bipolar resistive switching (BRS) Pt/TiO2/Pt sample, which was in a unipolar reset state, is provided by means of voltage pulsing and the resulting time-transient current analysis. The limited amount of oxygen vacancies in this system allowed reversibly switching-diode-like current-voltage curves, which was also confirmed in another Magnéli-phase-containing Pt/WO3/Pt sample. Such careful control of the defect distribution allowed the achievement of a complementary resistive switching (CRS) curve even from a single switching layer. The unlimited vacancy source in the Pt/TiO2/TiO2-x/Pt sample did not allow the switching-diode type and the CRS behavior. The data retention of the on-state in the BRS was critically dependent on the shape of the rejuvenated conduction channel. The required time to lead to the rejuvenation of the conducting channel was ∼70-100 ns when the threshold voltage for the BRS set of ∼-1 V was applied.

References

Jul 26, 2008·Nature Nanotechnology·J Joshua YangR Stanley Williams
Jan 19, 2010·Nature Nanotechnology·Deok-Hwang KwonCheol Seong Hwang
Apr 20, 2010·Nature Materials·Eike LinnRainer Waser

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Citations

Nov 18, 2015·Advanced Materials·Zheng-Hua TanXin Guo
Dec 22, 2015·Physical Chemistry Chemical Physics : PCCP·Zheng-Hua TanXin Guo
Jan 20, 2015·Scientific Reports·Kyung Min KimCheol Seong Hwang
Aug 20, 2016·Nanoscale Research Letters·Firman Mangasa SimanjuntakTseung-Yuen Tseng
Apr 20, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Sk Ziaur RahamanPei-Hua Wang
Feb 23, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Jiantai Timothy QiuSiddheswar Maikap

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