STRUCTURE AND DYNAMICS OF CU3AU(001) STUDIED BY ELASTIC AND INELASTIC HELIUM ATOM SCATTERING

被引：5

作者：

GANS, B

KING, SK

KNIPP, PA

KOLESKE, DD

SIBENER, SJ

机构：

[1] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

[2] UNIV CHICAGO,JAMES FRANCK INST,CHICAGO,IL 60637

[3] UNIV CHICAGO,DEPT CHEM,CHICAGO,IL 60637

来源：

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA | 1990年 / 54卷

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0368-2048(90)80226-Z

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

We have recently measured the surface phonon spectrum of the ordered binary alloy Cu3Au(001). In addition to the Rayleigh wave, we observe a higher energy mode which may be interpreted as the "folded" Rayleigh mode or "optical" surface mode. Using a harmonic pair potentials fit to the inelastic neutron scattering data of Katano et al 13, we find that the force constant between the first and second layer Cu atoms must be stiffened by 20% with respect to the bulk value in order to match the "folded" Rayleigh mode.

引用

页码：333 / 341

页数：9

共 25 条

[1] STUDIES OF VIBRATIONAL SURFACE MODES .1. GENERAL FORMULATION [J].