扫描隧道显微镜观察Fe沉积SrTiO3(100)-(√13 ×√13)- r33.7°表面

IF 1.3 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS Journal of the Ceramic Society of Japan Pub Date : 2023-10-01 DOI:10.2109/jcersj2.23068

Daiki Katsube, Naoki Origuchi, Motoyasu Maeda, Masayuki Abe

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引用次数: 0

摘要

给出了SrTiO3(100)-(√13 ×√13)- r33.7°表面的扫描隧道显微镜成像。低能电子衍射图表明，在室温下沉积铁后，表面重构仍然存在。在SrTiO3(100)-(√13 ×√13)- r33.7°表面，Fe沉积产生了包括氧空位在内的缺陷。这些缺陷具有c(√13 ×√13)对称性的周期性。扫描隧道能谱分析结果表明，在裸露的SrTiO3(100)-(√13 ×√13)- r33.7°表面上形成了两种类型的缺陷，一种与缺陷具有相同的态密度，另一种具有窄带隙结构。这些结果归因于FeOx/SrTiO3(100)界面上二维空穴气体的形成。

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Scanning tunneling microscopy observation of Fe deposited SrTiO3(100)-(√13 × √13)-R33.7° surface

Scanning tunneling microscopy imaging of Fe deposited SrTiO3(100)-(√13 × √13)-R33.7° surface is presented. Low-energy electron diffraction patterns showed that the surface reconstruction remained after Fe deposition at room temperature. Fe deposition generated defects, including oxygen vacancies, on the SrTiO3(100)-(√13 × √13)-R33.7° surface. These defects have a periodicity with the c(√13 × √13) symmetry. Scanning tunneling spectroscopy demonstrated the formation of two types of defects: one had the same density of state with defects on the bare SrTiO3(100)-(√13 × √13)-R33.7° surface, and the other had a narrow band gap structure. These results are attributed the formation of a two-dimensional hole gas at the FeOx/SrTiO3(100) interface.

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来源期刊

Journal of the Ceramic Society of Japan 工程技术-材料科学：硅酸盐

CiteScore

2.10

自引率

18.20%

发文量

170

审稿时长

2 months

期刊介绍： The Journal of the Ceramic Society of Japan (JCS-Japan) publishes original experimental and theoretical researches and reviews on ceramic science, ceramic materials, and related fields, including composites and hybrids. JCS-Japan welcomes manuscripts on both fundamental and applied researches.

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扫描隧道显微镜观察Fe沉积SrTiO<sub>3</sub>(100)-(√13 ×√13)- r33.7°表面

摘要