SURFACE-PHONON DISPERSION-CURVES AND THE LONGITUDINAL RESONANCE IN AG(001) OBSERVED BY HELIUM-ATOM SCATTERING

被引：14

作者：

BUNJES, N

LUO, NS

RUGGERONE, P

TOENNIES, JP

WITTE, G

机构：

[1] Max-Planck-Institut fur Strömungsforschung, D-37073 Göttingen

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.50.8897

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An intense longitudinal-surface-phonon resonance in addition to the Rayleigh mode is observed on Ag(001) by inelastic helium-atom scattering (HAS). This mode, which is only barely visible by electron-energy-loss spectroscopy, is similar to the one previously detected by HAS for Cu(001). This observation provides additional evidence for the pseudocharge model previously invoked to explain the anomalous longitudinal resonance observed in several metal surfaces by HAS. The observed differences between Cu(001) and Ag(001) are also shown to be consistent with the pseudocharge model.

引用

页码：8897 / 8900

页数：4

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