Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
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Atomic-scale investigations of perovskite oxide heteroepitaxy
Takeo OHSAWARyota SHIMIZUKatsuya IWAYASusumu SHIRAKITaro HITOSUGI
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Volume 122 (2014) Issue 1426 Pages 456-459

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Abstract

We have developed a low-temperature, high-magnetic-field scanning tunneling microscope combined with pulsed laser deposition. This system enables us to study atomic-scale growth of oxide thin films. In this paper, we investigated growth-mode-controlled epitaxial SrTiO3 (STO) and LaAlO3 films on STO(001) single-crystal substrates. A (√13×√13)-R33.7° STO(001) substrate, prepared in oxygen atmosphere, is atomically resolved and plays a crucial role in elucidating the initial growth process. Atomic-scale microscopic approach performed in this study opens up a way to novel functionalities in oxide thin films and heterostructures.

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