Lattice dynamics of the (7x7) reconstructed Si(111) surface from high-resolution helium atom scattering

被引：7

作者：

Lange, G

Toennies, JP

Ruggerone, P

Benedek, G

机构：

[1] Max Planck Inst Stromungsforsch, D-37073 Gottingen, Germany

[2] Fritz Haber Inst, D-14195 Berlin, Germany

[3] Univ Milan, Dipartimento Fis, Ist Nazl Fis Mat, I-20133 Milan, Italy

来源：

EUROPHYSICS LETTERS | 1998年 / 41卷 / 06期

关键词：

D O I：

10.1209/epl/i1998-00207-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The low-energy part of the surface vibrational spectrum of the Si(111)(7x7) surface has been measured along both symmetry directions using high-resolution helium atom scattering. The analysis of the experimental data with a simple model enables the identification of contributions arising from the geometrical back-folding of the Rayleigh wave and from vibrations of adatoms, in excellent agreement with recent ab initio results.

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收藏

页码：647 / 652

页数：6

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