Demonstrative operation of four-terminal memristive devices fabricated on reduced TiO2 single crystals

Scientific Reports
Shotaro TakeuchiAkira Sakai

Abstract

Resistive switching (RS) was demonstrated in four-terminal planar memristive devices fabricated on reduced TiO2 (TiO2-x) single crystal substrates. In the device, a pair of diagonally opposing electrode terminals is used to modify the distribution of oxygen vacancies in the region between another pair of diagonally opposing electrode terminals. This allowed microscopic visual observations of the oxygen vacancy distribution based on electrocoloring. The visual contrast observed in the TiO2-x reflects the oxygen vacancy concentration in the electrically active zone of the device, which can be modified by application of various external voltages to the electrodes. The current that flows in the device is significantly dependent on the modified oxygen vacancy distribution and the resultant resistance is switchable when the polarization of the applied external voltage is reversed. The crystallographic orientation of the TiO2-x substrate has a strong influence on the reversible RS phenomenon. Mechanisms behind the voltage-driven resistance change are elaborated with the aid of microscopic analysis for both crystalline and electronic structures in the electrically active zone of the device. Suppression of the formation of irreversible ...Continue Reading

References

May 3, 2008·Nature·Dmitri B StrukovR Stanley Williams
Jul 26, 2008·Nature Nanotechnology·J Joshua YangR Stanley Williams
Aug 5, 2009·Nanotechnology·Hyejung ChoiHyunsang Hwang
Jan 19, 2010·Nature Nanotechnology·Deok-Hwang KwonCheol Seong Hwang
Feb 26, 2010·Nanotechnology·Andy ShihIshiang Shih
Jun 1, 2010·Advanced Materials·John Paul StrachanR Stanley Williams
May 17, 2011·Nanotechnology·John Paul StrachanR Stanley Williams
May 17, 2011·Nanotechnology·Qiangfei XiaR Stanley Williams
May 17, 2011·Nanotechnology·K SzotR Waser
Dec 28, 2012·Nature Nanotechnology·J Joshua YangDuncan R Stewart
Mar 19, 2014·Nature Communications·Yoshitaka AokiManfred Martin
Dec 23, 2014·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Ranga J KamaladasaYoosuf N Picard
Jun 29, 2016·ACS Applied Materials & Interfaces·Jonghan KwonMarek Skowronski

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Methods Mentioned

BETA
optical microscopy
transmission electron microscopy
electron diffraction

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