Effect of oxygen deficiency on SrTiO3(001) surface reconstructions

被引：41

作者：

Shimizu, Ryota ^{[1
,2
]}

Iwaya, Katsuya ^{[1
]}

Ohsawa, Takeo ^{[1
]}

Shiraki, Susumu ^{[1
]}

Hasegawa, Tetsuya ^{[2
]}

Hashizume, Tomihiro ^{[1
,3
,4
]}

Hitosugi, Taro ^{[1
,5
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Univ Tokyo, Dept Chem, Tokyo 1130033, Japan

[3] Hitachi Ltd, Cent Res Lab, Saitama 3500395, Japan

[4] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

[5] Japan Sci & Technol Agcy, PRESTO, Tokyo 1020076, Japan

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 26期

关键词：

THIN-FILM; SRTIO3(100); GROWTH; ION;

D O I：

10.1063/1.4730409

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The contribution of oxygen deficiencies to SrTiO3(001) surface reconstructions is studied using low-energy electron diffraction and scanning tunneling microscopy. We have prepared a SrTiO3 sample with spatially graded oxygen deficiencies, in which R33.7 degrees-(root 13 x root 13), (2 x 1), and R26.6 degrees -(root 5 x root 5) surface reconstructions are observed while increasing the amount of oxygen deficiencies. This indicates that oxygen nonstoichiometry has an influence on the formation of various surface reconstructions as one of the important factors. This concept is also applicable to other transition metal oxides to prepare atomically ordered surfaces in a reproducible manner. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4730409]

引用

页数：4

共 34 条

[1]

B Reed T., 1971, FREE ENERGY FORMATIO

[2]

Castell MR, 2002, SURF SCI, V505, P1, DOI 10.1016/S0039-6028(02)01393-6

[3] BULK AND SURFACE TI3D VALENCE AND DEFECT STATES IN SRTIO3(001) FROM RESONANT PHOTOEMISSION [J].

COURTHS, R ;

CORD, B ;

SAALFELD, H .

SOLID STATE COMMUNICATIONS, 1989, 70 (11) :1047-1051

[4] Strontium titanate surfaces [J].

Deak, D. S. .

MATERIALS SCIENCE AND TECHNOLOGY, 2007, 23 (02) :127-136

[5] Ordering of TiO2-based nanostructures on SrTiO3(001) surfaces [J].

Deak, DS ;

Silly, F ;

Newell, DT ;

Castell, MR .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (18) :9246-9251

[6] The surface science of titanium dioxide [J].

Diebold, U .

SURFACE SCIENCE REPORTS, 2003, 48 (5-8) :53-229

[7] SrTiO3(001) surface structures under oxidizing conditions [J].

Erdman, N ;

Marks, LD .

SURFACE SCIENCE, 2003, 526 (1-2) :107-114

[8] Surface structures of SrTiO3 (001):: A TiO2-rich reconstruction with a c(4 x 2) unit cell [J].

Erdman, N ;

Warschkow, O ;

Asta, M ;

Poeppelmeier, KR ;

Ellis, DE ;

Marks, LD .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (33) :10050-10056

[9] The structure and chemistry of the TiO2-rich surface of SrTiO3(001) [J].

Erdman, N ;

Poeppelmeier, KR ;

Asta, M ;

Warschkow, O ;

Ellis, DE ;

Marks, LD .

NATURE, 2002, 419 (6902) :55-58

[10]

Frantzeskakis E., 2012, PHYS REV B, V85

← 1 2 3 4 →