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Proceedings Paper

Direct visualization of atomic and electronic structure on perovskite oxide film surface
Author(s): Takeo Ohsawa; Katsuya Iwaya; Yoshinori Okada; Ryota Shimizu; Susumu Shiraki; Taro Hitosugi
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Paper Abstract

We have developed a low-temperature, high-magnetic-field scanning tunneling microscope (STM) combined with pulsed laser deposition (PLD), and studied the electronic structures of homoepitaxial thin film surfaces of SrTiO3(001). Thin film thicknesses were monitored during depositions using a reflection high-energy electron diffraction, and the samples were investigated by using the STM without exposing the sample surfaces to air. Scanning tunneling spectroscopy (STS) mapping reveals a number of defects that can be categorized into three feature-specific types. The development of this STM-PLD system opens up a way to investigate extraordinary and inhomogeneous electronic structures in complex oxide thin films, heterostructures and nanostructures.

Paper Details

Date Published: 13 March 2015
PDF: 6 pages
Proc. SPIE 9364, Oxide-based Materials and Devices VI, 936407 (13 March 2015); doi: 10.1117/12.2079469
Show Author Affiliations
Takeo Ohsawa, Tohoku Univ. (Japan)
Katsuya Iwaya, Tohoku Univ. (Japan)
Yoshinori Okada, Tohoku Univ. (Japan)
Ryota Shimizu, Tohoku Univ. (Japan)
Susumu Shiraki, Tohoku Univ. (Japan)
Taro Hitosugi, Tohoku Univ. (Japan)
Japan Science and Technology (Japan)


Published in SPIE Proceedings Vol. 9364:
Oxide-based Materials and Devices VI
Ferechteh H. Teherani; David C. Look; David J. Rogers, Editor(s)

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