A cross-sectional scanning tunneling microscopy study of IrO2 rutile single crystals

被引:12
作者
Pai, Woei Wu [1 ]
Wu, T. Y.
Lin, C. H.
Wang, B. X.
Huang, Y. S.
Chou, H. L.
机构
[1] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 106, Taiwan
[2] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan
[3] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 106, Taiwan
关键词
cross-sectional STM; XSTM; IrO2; STM; rutile; SURFACE; STM;
D O I
10.1016/j.susc.2007.04.227
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Rutile iridium dioxide (IrO2) surfaces were studied by cross-sectional scanning tunneling microscopy (XSTM). Atomically flat surfaces prepared by in situ ultra high vacuum cleaving of crystalline platelets of thicknesses < 50 mu m were successfully demonstrated. In addition to (110) surface, several vicinal planes, e.g., (120), (130) and similar to (891), were also examined. The cleaved planes are close to bulk-terminated surfaces with predominant [001]-oriented bridge oxygen rows. Unlike TiO2, bright oxygen rows are imaged and oxygen defects appear as dim species. Our studies show that XSTM is a viable technique to study oxide surfaces that are otherwise difficult to prepare. (c) 2007 Published by Elsevier B.V.
引用
收藏
页码:L69 / L72
页数:4
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