A new pseudo-(100) sulphur-induced reconstruction of Cu(111) observed by scanning tunnelling microscopy

被引：31

作者：

Driver, SM ^{[1
]}

Woodruff, DP ^{[1
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

SURFACE SCIENCE | 2001年 / 479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; chemisorption; surface structure; morphology; roughness; and topography; surface stress; copper; sulphur;

D O I：

10.1016/S0039-6028(01)01020-2

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：

A new S-induced adsorption phase on Cu(1 1 1)has been observed by scanning tunnelling microscopy. This phase is formed by dissociation of adsorbed methanethiolate in an electron beam, and is found to coexist with the known Cu(1 1 1)/S (root7 x root7)R19 degrees and /(4)(-1) (1)(4)/ ('zig-zag') phases. It has a near-square geometry, which we interpret in terms of a significantly expanded pseudo-(1 0 0)c(2 x 2)-S model. This conclusion is notable in that no equivalent Cu(1 0 0)c(2 x 2)-S phase exists, and the expanded lattice constant of the new phase is argued to be significant for its stability. Associated with this reconstruction is a strong corrugation which may be due to stress-induced buckling. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：1 / 10

页数：10

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