Journal Article

FZJ-2015-06214

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spectromicroscopic insights for rational design of redox-based memristive devices

Baeumer, C. (Corresponding author)FZJ* ; Schmitz, C.FZJ* ; Ramadan, A. H. H. ; Du, H.FZJ* ; Skaja, K.FZJ* ; Feyer, V.FZJ* ; Müller, P. ; Arndt, B.FZJ* ; Jia, C.-L.FZJ* ; Mayer, J.FZJ* ; De Souza, R. A. ; Michael Schneider, C.FZJ* ; Waser, R.FZJ* ; Dittmann, R.FZJ*

2015
Nature Publishing Group London

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Please use a persistent id in citations: http://hdl.handle.net/2128/9355  doi:10.1038/ncomms9610

Abstract: The demand for highly scalable, low-power devices for data storage and logic operations is strongly stimulating research into resistive switching as a novel concept for future non-volatile memory devices. To meet technological requirements, it is imperative to have a set of material design rules based on fundamental material physics, but deriving such rules is proving challenging. Here, we elucidate both switching mechanism and failure mechanism in the valence-change model material SrTiO3, and on this basis we derive a design rule for failure-resistant devices. Spectromicroscopy reveals that the resistance change during device operation and failure is indeed caused by nanoscale oxygen migration resulting in localized valence changes between Ti4+ and Ti3+. While fast reoxidation typically results in retention failure in SrTiO3, local phase separation within the switching filament stabilizes the retention. Mimicking this phase separation by intentionally introducing retention-stabilization layers with slow oxygen transport improves retention times considerably.

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Contributing Institute(s):

1. Elektronische Materialien (PGI-7)
2. Elektronische Eigenschaften (PGI-6)
3. Mikrostrukturforschung (PGI-5)
4. JARA-FIT (JARA-FIT)

Research Program(s):

1. 521 - Controlling Electron Charge-Based Phenomena (POF3-521) (POF3-521)

Appears in the scientific report 2015

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Database coverage:
; ; ; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

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