EFFECTS OF ADSORPTION SITE AND SURFACE STRESS ON ORDERED STRUCTURES OF OXYGEN ADSORBED ON W(110)

被引：73

作者：

JOHNSON, KE ^{[1
]}

WILSON, RJ ^{[1
]}

CHIANG, S ^{[1
]}

机构：

[1] IBM CORP,ALMADEN RES CTR,DIV RES,SAN JOSE,CA 95120

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.71.1055

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ordered phases of O on W(110) entail compressive surface stress, the manifestations of which are directly observed for different coverages using scanning tunneling microscopy. Low coverage adsorption results in a gas phase with disordered persistent structures. At higher coverage, ordered phases condense with disordered domains. O adsorption in the two distinct triply coordinated sites of the W(110) unit cell leads to separate domains with the adsorption site exchanged. Annealing relieves compression within high coverage phases by the formation of site-exchange domain superstructures.

引用

页码：1055 / 1058

页数：4

共 14 条

[1] ADSORPTION OF OXYGEN ON W(110) .2. HIGH COVERAGE RANGE [J].