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

被引：1
作者：
Katsube, Daiki [1 ,2 ]
Origuchi, Naoki [2 ]
Maeda, Motoyasu [2 ]
Abe, Masayuki [2 ]
机构：
[1] RIKEN, Cluster Pioneering Res, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
[2] Osaka Univ, Grad Sch Engn Sci, 1-3 Machikaneyama, Toyonaka, Osaka 5608531, Japan
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2023年 / 131卷 / 10期
关键词：
Scanning tunneling microscopy; Low-energy electron diffraction; SrTiO3(100); Surface defect;
D O I：
10.2109/jcersj2.23068
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Scanning tunneling microscopy imaging of Fe deposited SrTiO3(100)-(root 13 x root 13)-R33.7 degrees 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)-(root 13 x root 13)-R33.7 degrees surface. These defects have a periodicity with the c(root 13 x root 13) symmetry. Scanning tunneling spectros-copy demonstrated the formation of two types of defects: one had the same density of state with defects on the bare SrTiO3(100)-(root 13 x root 13)-R33.7 degrees 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. (c) 2023 The Ceramic Society of Japan. All rights reserved.
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收藏
页码：665 / 668
页数：4
相关论文
共 15 条
[1]   High-Mobility 2D Hole Gas at a SrTiO3 Interface [J].
Anh, Le Duci ;
Kaneta, Shingo ;
Tokunaga, Masashi ;
Seki, Munetoshi ;
Tabata, Hitoshi ;
Tanaka, Masaaki ;
Ohya, Shinobu .
ADVANCED MATERIALS, 2020, 32 (14)
[2]   A high-mobility two-dimensional electron gas at the spinel/perovskite interface of γ-Al2O3/SrTiO3 [J].
Chen, Y. Z. ;
Bovet, N. ;
Trier, F. ;
Christensen, D. V. ;
Qu, F. M. ;
Andersen, N. H. ;
Kasama, T. ;
Zhang, W. ;
Giraud, R. ;
Dufouleur, J. ;
Jespersen, T. S. ;
Sun, J. R. ;
Smith, A. ;
Nygard, J. ;
Lu, L. ;
Buechner, B. ;
Shen, B. G. ;
Linderoth, S. ;
Pryds, N. .
NATURE COMMUNICATIONS, 2013, 4
[3]   Coexistence of Superconductivity and Ferromagnetism in Two Dimensions [J].
Dikin, D. A. ;
Mehta, M. ;
Bark, C. W. ;
Folkman, C. M. ;
Eom, C. B. ;
Chandrasekhar, V. .
PHYSICAL REVIEW LETTERS, 2011, 107 (05)
[4]   Imaging the Evolution of d States at a Strontium Titanate Surface [J].
Hamada, Ikutaro ;
Shimizu, Ryota ;
Ohsawa, Takeo ;
Iwaya, Katsuya ;
Hashizume, Tomihiro ;
Tsukada, Masaru ;
Akagi, Kazuto ;
Hitosugi, Taro .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (49) :17201-17206
[5]   Identification of OH groups on SrTiO3(100)-(√13x √13)-R33.7° reconstructed surface by non-contact atomic force microscopy and scanning tunneling microscopy [J].
Katsube, Daiki ;
Shimizu, Ryota ;
Sugimoto, Yoshiaki ;
Hitosugi, Taro ;
Abe, Masayuki .
APPLIED PHYSICS LETTERS, 2023, 122 (07)
[6]   Combined pulsed laser deposition and non-contact atomic force microscopy system for studies of insulator metal oxide thin films [J].
Katsube, Daiki ;
Yamashita, Hayato ;
Abo, Satoshi ;
Abe, Masayuki .
BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 2018, 9 :686-692
[7]   Impact of Fe doping on the electronic structure of SrTiO3 thin films determined by resonant photoemission [J].
Kubacki, J. ;
Kajewski, D. ;
Goraus, J. ;
Szot, K. ;
Koehl, A. ;
Lenser, Ch. ;
Dittmann, R. ;
Szade, J. .
JOURNAL OF CHEMICAL PHYSICS, 2018, 148 (15)
[8]   A Single-Atom-Thick TiO2 Nanomesh on an Insulating Oxide [J].
Ohsawa, Takeo ;
Saito, Mitsuhiro ;
Hamada, Ikutaro ;
Shimizu, Ryota ;
Iwaya, Katsuya ;
Shiraki, Susumu ;
Wang, Zhongchang ;
Ikuhara, Yuichi ;
Hitosugi, Taro .
ACS NANO, 2015, 9 (09) :8766-8772
[9]   Visualizing Atomistic Formation Process of SrOx Thin Films on SrTiO3 [J].
Ohsawa, Takeo ;
Shimizu, Ryota ;
Iwaya, Katsuya ;
Hitosugi, Taro .
ACS NANO, 2014, 8 (03) :2223-2229
[10]   A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface [J].
Ohtomo, A ;
Hwang, HY .
NATURE, 2004, 427 (6973) :423-426
12