SURFACE ALLOYING AND SUPERSTRUCTURES OF PB ON CU(100)

被引：96

作者：

NAGL, C ^{[1
]}

PLATZGUMMER, E ^{[1
]}

HALLER, O ^{[1
]}

SCHMID, M ^{[1
]}

VARGA, P ^{[1
]}

机构：

[1] VIENNA TECH UNIV, INST ALLGEMEINE PHYS, A-1040 VIENNA, AUSTRIA

来源：

SURFACE SCIENCE | 1995年 / 331卷

关键词：

ADATOMS; ALLOYS; COPPER; LEAD; METAL-METAL NONMAGNETIC THIN FILM STRUCTURES; NUCLEATION; SCANNING TUNNELING MICROSCOPY; SINGLE CRYSTAL SURFACES;

D O I：

10.1016/0039-6028(95)00387-8

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：

The growth of submonolayer and monolayer Pb films on Cu(100) has been investigated by STM. In the submonolayer region a disordered surface alloy is found in spite of the immiscibility of bulk Cu and Pb. At a coverage of theta = 3/8 a c(4 x 4) superstructure is observed. The atomic arrangement of the c(4 x 4) superstructure unit cell could be revealed; it is formed by linear chains of Pb atoms in two rotational domains. Increasing the coverage to theta = 0.5, a c(2 x 2) structure can be observed. The transition to the c(5 root 2 x root 2)R45 degrees superstructure of the dense overlayer proceeds via the insertion of antiphase domain boundary. The model for the c(5 root 2 x root 2)R45 degrees superstructure presented in literature is confirmed.

引用

页码：831 / 837

页数：7

共 15 条

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