ENHANCED HELIUM-ATOM SCATTERING FROM LONGITUDINAL SURFACE PHONONS IN CU(001)

被引：57

作者：

BENEDEK, G ^{[1
]}

ELLIS, J ^{[1
]}

LUO, NS ^{[1
]}

REICHMUTH, A ^{[1
]}

RUGGERONE, P ^{[1
]}

TOENNIES, JP ^{[1
]}

机构：

[1] UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.48.4917

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inelastic helium-atom scattering from Cu(001) shows giant intensities for the longitudinal-surface-phonon resonance. This effect, most pronounced in the [100] direction and not visible with electron-energy-loss spectroscopy, indicates a very large anisotropic deformability of conduction electrons against the longitudinal modes of surface atoms. Its size and anisotropy are well accounted for by a pseudo-charge model for surface dynamics.

引用

页码：4917 / 4920

页数：4

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