Atomic-scale visualization of initial growth of homoepitaxial SrTiO 3 thin film on an atomically ordered substrate

Ryota Shimizu, Katsuya Iwaya, Takeo Ohsawa, Susumu Shiraki, Tetsuya Hasegawa, Tomihiro Hashizume, Taro Hitosugi

    Research output: Contribution to journalArticlepeer-review

    35 Citations (Scopus)

    Abstract

    The initial homoepitaxial growth of SrTiO3 on a (√13 × √13)-R33.7° SrTiO3(001) substrate surface, which can be prepared under oxide growth conditions, is atomically resolved by scanning tunneling microscopy. The identical (√13 × √13) atomic structure is clearly visualized on the deposited SrTiO3 film surface as well as on the substrate. This result indicates the transfer of the topmost Ti-rich (√13 × √13) structure to the film surface and atomic-scale coherent epitaxy at the film/substrate interface. Such atomically ordered SrTiO3 substrates can be applied to the fabrication of atom-by-atom controlled oxide epitaxial films and heterostructures.

    Original languageEnglish
    Pages (from-to)7967-7971
    Number of pages5
    JournalACS Nano
    Volume5
    Issue number10
    DOIs
    Publication statusPublished - 2011 Oct 25

    Keywords

    • interfacial engineering
    • oxide electronics
    • pulsed laser deposition
    • scanning tunneling microscopy
    • strontium titanate

    ASJC Scopus subject areas

    • Materials Science(all)
    • Engineering(all)
    • Physics and Astronomy(all)

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