Surface structure of reduced SrTiO3(111) observed by scanning tunneling microscopy

被引:34
作者
Tanaka, H [1 ]
Kawai, T [1 ]
机构
[1] OSAKA UNIV,INST SCI & IND RES,IBARAKI,OSAKA 567,JAPAN
关键词
low index single crystal surfaces; scanning tunneling microscopy; semiconducting surfaces; strontium titanate; surface structure; morphology; roughness; and topography;
D O I
10.1016/0039-6028(96)00739-X
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
We have obtained clean surfaces of reduced SrTiO3(111) crystals and observed them by means of scanning tunneling microscopy (STM) combined with reflection high energy diffraction. Two different surface structures are observed. One, obtained by annealing at the temperature similar to 1180 degrees C, is assigned to have a Sr-O-3-x outermost layer. The other, obtained by annealing at the temperature similar to 1220 degrees C, is assigned to have a Ti outermost layer. The STM images reveal that the reproducible preparation of dean and well-defined-surfaces of SrTiO3(111) is possible.
引用
收藏
页码:437 / 442
页数:6
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