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The interplay between structure and function in redox-based resistance switching

Kenyon, AJ; Munde, M; Ng, W; Buckwell, M; Joksas, D; Mehonic, A; (2018) The interplay between structure and function in redox-based resistance switching. Faraday Discussions 10.1039/C8FD00118A. (In press). Green open access

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Abstract

We report a study of the relationship between oxide microstructure at the scale of tens of nanometres and resistance switching behaviour in silicon oxide. In the case of sputtered amorphous oxides, the presence of columnar structure enables efficient resistance switching by providing an intial structured distribution of defects that can act as precursors for the formation of chains of conductive oxygen vacancies under the application of appropriate electrical bias. Increasing electrode interface roughness decreases electroforming voltages and reduces the distribution of switching voltages. Any contribution to these effects from field enhancement at rough interfaces is secondary to changes in oxide microstructure templated by interface structure.

Type: Article
Title: The interplay between structure and function in redox-based resistance switching
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/C8FD00118A
Publisher version: http://dx.doi.org/10.1039/C8FD00118A
Language: English
Additional information: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. (https://creativecommons.org/licenses/by/3.0/)
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10051529
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