Impact of the cation-stoichiometry on the resistive switching and data retention of SrTiO3 thin films

N. Raab*, C. Bäumer, R. Dittmann

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

21 Citations (Scopus)

Abstract

Resistive switching oxides are investigated at great length as promising candidates for the next generation of non-volatile memories. It is generally assumed that defects have a strong impact on the resistive switching properties of transition metal oxides. However, the correlation between different types of defect structures and the switching properties is still elusive. We deposited single-crystalline SrTiO3thin films with various cation stoichiometry by pulsed laser deposition to investigate the stoichiometry related and therefore defect dependent influence on the resistive switching properties. This letter will reveal the differences in initial states, forming steps, switching characteristics as well as retention times taking into account both point defects and extended defects. We then propose an explanation on the basis of oxygen vacancy generation and redistribution to elucidate the dependence of the resistive switching properties on the cation stoichiometry dependent defect structure.

Original languageEnglish
Article number047150
JournalAIP advances
Volume5
Issue number4
DOIs
Publication statusPublished - 1 Apr 2015
Externally publishedYes

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