Direct visualization of atomic and electronic structure on perovskite oxide film surface

Takeo Ohsawa; Katsuya Iwaya; Yoshinori Okada; Ryota Shimizu; Susumu Shiraki; Taro Hitosugi

doi:10.1117/12.2079469

13 March 2015 Direct visualization of atomic and electronic structure on perovskite oxide film surface

Takeo Ohsawa, Katsuya Iwaya, Yoshinori Okada, Ryota Shimizu, Susumu Shiraki, Taro Hitosugi

Proceedings Volume 9364, Oxide-based Materials and Devices VI; 936407 (2015) https://doi.org/10.1117/12.2079469
Event: SPIE OPTO, 2015, San Francisco, California, United States

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.

Citation Download Citation

Takeo Ohsawa, Katsuya Iwaya, Yoshinori Okada, Ryota Shimizu, Susumu Shiraki, and Taro Hitosugi "Direct visualization of atomic and electronic structure on perovskite oxide film surface", Proc. SPIE 9364, Oxide-based Materials and Devices VI, 936407 (13 March 2015); https://doi.org/10.1117/12.2079469

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