FORMATION AND STRUCTURAL-ANALYSIS OF A SURFACE ALLOY - AL(111)-(2X2)-NA

被引：47

作者：

BURCHHARDT, J

NIELSEN, MM

ADAMS, DL

LUNDGREN, E

ANDERSEN, JN

STAMPFL, C

SCHEFFLER, M

SCHMALZ, A

AMINPIROOZ, S

HAASE, J

机构：

[1] LUND UNIV,INST PHYS,DEPT SYNCHROTRON RADIAT RES,S-22362 LUND,SWEDEN

[2] MAX PLANCK GESELL,FRITZ HABER INST,D-14195 BERLIN,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.74.1617

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Al(111)-(2 × 2)-Na phase formed by adsorption of one-half monolayer Na at 300 K is shown to be a surface alloy. Quantitative agreement is achieved between the results of structure determinations by low energy electron diffraction, surface extended x-ray adsorption fine structure, and total energy calculations. The first four layers of the structure are shown to consist of a Na-Al-Na sandwich on a reconstructed Al substrate layer. It is suggested that the formation of the structure involves surface steps as sources of Al atoms. © 1995 The American Physical Society.

引用

页码：1617 / 1620

页数：4

共 25 条

[1] TEMPERATURE-DEPENDENT LOCAL GEOMETRIES IN THE SYSTEM AL(100)-C(2X2)-NA - A SURFACE EXTENDED X-RAY-ABSORPTION FINE-STRUCTURE STUDY [J].