The surface structure of SnO2(110) (4x1) revealed by scanning tunneling microscopy

被引：55
作者：
Jones, FH
Dixon, R
Foord, JS
Egdell, RG
Pethica, JB
机构：
[1] NEW CHEM LAB,OXFORD OX1 3QT,ENGLAND
[2] UNIV OXFORD,DEPT MAT,OXFORD OX1 3PH,ENGLAND
来源：
SURFACE SCIENCE | 1997年 / 376卷 / 1-3期
基金：
英国工程与自然科学研究理事会;
关键词：
scanning tunneling microscopy; surface structure; tin oxide;
D O I：
10.1016/S0039-6028(96)01327-1
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：
Conditions required to produce a (4 x 1) reconstruction on SnO2 (110) have been investigated and atomically resolved STM images of this surface have been obtained for the first time. Stable tunneling is most easily achieved at +1.5V sample bias. The (4 x 1) periodicity is well defined in these images. The greyscale contrast changes dramatically in images taken at +1.0V sample bias and structure within the unit cell is much better defined at the lower sample bias. The STM images are inconsistent with a model that has been proposed for the (4 x 1) surface which involves a coincident SnO overlayer, and an alternative model involving an ordered array of in-plane oxygen vacancies is proposed. (C) 1997 Elsevier Science B.V.
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收藏
页码：367 / 373
页数：7
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