Step energetics of Pb(111) vicinal surfaces from facet shape

被引：51

作者：

Arenhold, K

Surnev, S

Bonzel, HP

Wynblatt, P

机构：

[1] Forschungszentrum Julich, Inst Grenzflachenforsch & Vakuumphys, D-52425 Julich, Germany

[2] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

来源：

SURFACE SCIENCE | 1999年 / 424卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

equilibrium thermodynamics; scanning tunneling microscopy; faceting; surface energy; morphology; vicinal single crystal surfaces;

D O I：

10.1016/S0039-6028(99)00074-6

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 step stiffness, step interaction and kink formation energies of steps vicinal to (111) have been derived from the equilibrium shape of a (111) facet on a small three-dimensional Pb crystal imaged by scanning tunneling microscopy. In addition, the azimuthal dependence of the step free energy for vicinal (111) surfaces has been obtained by an 'inverse' Wulff construction from the facet shape. Most of these energetic quantities can be quoted for both types of step (A- and B-steps). By also taking into account the curved portion of the vicinal surface, consisting primarily of B-steps, the entropic and total step interaction energy of B-steps can be separately obtained. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：271 / 277

页数：7

共 37 条

[1] Step stiffness and equilibrium island shape of Si(100) surface: Statistical-mechanical calculation by the imaginary path weight random-walk method [J].