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.

引用

页码：367 / 373

页数：7

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[1] SPECTROSCOPIC PROPERTIES OF SEMICONDUCTOR CRYSTALS WITH DIRECT FORBIDDEN ENERGY-GAP [J].