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Atomic-scale fatigue mechanism of ferroelectric tunnel junctions.

ABSTRACT: [Figure: see text].

SUBMITTER: Yang Y

PROVIDER: S-EPMC8612688 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

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Atomic-scale fatigue mechanism of ferroelectric tunnel junctions.

Yang Yihao Y Wu Ming M Zheng Xingwen X Zheng Chunyan C Xu Jibo J Xu Zhiyu Z Li Xiaofei X Lou Xiaojie X Wu Di D Liu Xiaohui X Pennycook Stephen J SJ Wen Zheng Z

Science advances 20211124 48

Ferroelectric tunnel junctions (FTJs) are promising candidates for next-generation memories due to fast read/write speeds and low-power consumptions. Here, we investigate resistance fatigue of FTJs, which is performed on Pt/BaTiO3/Nb:SrTiO3 devices. By direct observations of the 5–unit cell–thick BaTiO3 barrier with high-angle annular dark-field imaging and electron energy loss spectroscopy, oxygen vacancies are found to aggregate at the Pt/BaTiO3 inte ...[more]

PMID: 34818041

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