Interfacial chemical bonding-mediated ionic resistive switching

Abstract In this paper, we present a unique resistive switching (RS) mechanism study of Pt/TiO2/Pt cell, one of the most widely studied RS system, by focusing on the role of interfacial bonding at the active TiO2–Pt interface, as opposed to a physico-chemical change within the RS film. This study wa...

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Autores principales:	Hyeongjoo Moon, Vishal Zade, Hung-Sen Kang, Jin-Woo Han, Eunseok Lee, Cheol Seong Hwang, Min Hwan Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5b8c25f9322543d2907589cd47a7ba4a
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spelling	oai:doaj.org-article:5b8c25f9322543d2907589cd47a7ba4a2021-12-02T11:52:34ZInterfacial chemical bonding-mediated ionic resistive switching10.1038/s41598-017-01493-x2045-2322https://doaj.org/article/5b8c25f9322543d2907589cd47a7ba4a2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01493-xhttps://doaj.org/toc/2045-2322Abstract In this paper, we present a unique resistive switching (RS) mechanism study of Pt/TiO2/Pt cell, one of the most widely studied RS system, by focusing on the role of interfacial bonding at the active TiO2–Pt interface, as opposed to a physico-chemical change within the RS film. This study was enabled by the use of a non-conventional scanning probe-based setup. The nanoscale cell is formed by bringing a Pt/TiO2-coated atomic force microscope tip into contact with a flat substrate coated with Pt. The study reveals that electrical resistance and interfacial bonding status are highly coupled together. An oxygen-mediated chemical bonding at the active interface between TiO2 and Pt is a necessary condition for a non-polar low-resistance state, and a reset switching process disconnects the chemical bonding. Bipolar switching mode did not involve the chemical bonding. The nature of chemical bonding at the TiO2-metal interface is further studied by density functional theory calculations.Hyeongjoo MoonVishal ZadeHung-Sen KangJin-Woo HanEunseok LeeCheol Seong HwangMin Hwan LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hyeongjoo Moon Vishal Zade Hung-Sen Kang Jin-Woo Han Eunseok Lee Cheol Seong Hwang Min Hwan Lee Interfacial chemical bonding-mediated ionic resistive switching
description	Abstract In this paper, we present a unique resistive switching (RS) mechanism study of Pt/TiO2/Pt cell, one of the most widely studied RS system, by focusing on the role of interfacial bonding at the active TiO2–Pt interface, as opposed to a physico-chemical change within the RS film. This study was enabled by the use of a non-conventional scanning probe-based setup. The nanoscale cell is formed by bringing a Pt/TiO2-coated atomic force microscope tip into contact with a flat substrate coated with Pt. The study reveals that electrical resistance and interfacial bonding status are highly coupled together. An oxygen-mediated chemical bonding at the active interface between TiO2 and Pt is a necessary condition for a non-polar low-resistance state, and a reset switching process disconnects the chemical bonding. Bipolar switching mode did not involve the chemical bonding. The nature of chemical bonding at the TiO2-metal interface is further studied by density functional theory calculations.
format	article
author	Hyeongjoo Moon Vishal Zade Hung-Sen Kang Jin-Woo Han Eunseok Lee Cheol Seong Hwang Min Hwan Lee
author_facet	Hyeongjoo Moon Vishal Zade Hung-Sen Kang Jin-Woo Han Eunseok Lee Cheol Seong Hwang Min Hwan Lee
author_sort	Hyeongjoo Moon
title	Interfacial chemical bonding-mediated ionic resistive switching
title_short	Interfacial chemical bonding-mediated ionic resistive switching
title_full	Interfacial chemical bonding-mediated ionic resistive switching
title_fullStr	Interfacial chemical bonding-mediated ionic resistive switching
title_full_unstemmed	Interfacial chemical bonding-mediated ionic resistive switching
title_sort	interfacial chemical bonding-mediated ionic resistive switching
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5b8c25f9322543d2907589cd47a7ba4a
work_keys_str_mv	AT hyeongjoomoon interfacialchemicalbondingmediatedionicresistiveswitching AT vishalzade interfacialchemicalbondingmediatedionicresistiveswitching AT hungsenkang interfacialchemicalbondingmediatedionicresistiveswitching AT jinwoohan interfacialchemicalbondingmediatedionicresistiveswitching AT eunseoklee interfacialchemicalbondingmediatedionicresistiveswitching AT cheolseonghwang interfacialchemicalbondingmediatedionicresistiveswitching AT minhwanlee interfacialchemicalbondingmediatedionicresistiveswitching
_version_	1718394986482892800

Interfacial chemical bonding-mediated ionic resistive switching

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