RELAXATION AT HIGH-INDEX SURFACES STUDIED BY ATOMIC-RESOLUTION SCANNING TUNNELING MICROSCOPY - AU(311), (533), AND (221) ELECTROCHEMICAL INTERFACES

被引：27

作者：

GAO, XP ^{[1
]}

HAMELIN, A ^{[1
]}

WEAVER, MJ ^{[1
]}

机构：

[1] CNRS, ELECTROCHIM INTERFACIALE LAB, 1 PL A BRIAND, F-92195 MEUDON, FRANCE

来源：

SURFACE SCIENCE | 1992年 / 274卷 / 03期

关键词：

D O I：

10.1016/0039-6028(92)90830-Y

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：

Atomic relaxation at the stepped surfaces Au(311), (533), and (221) in aqueous solution is examined by atomic-resolution scanning tunneling microscopy (STM). The former two surfaces yield ordered (1 X 1) domains at electrode potentials corresponding to near-zero or positive electronic charges. Substantial surface relaxation is observed, however, at more negative potentials, featuring displacements of the step edge and neighboring atomic rows. The Au(221) surface exhibits a marked relaxation at positive as well as negative electronic charges. The so-far underutilized value of STM for exploring atomic structure at stepped surfaces is demonstrated by these findings.

引用

页码：L588 / L592

页数：5

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