ANOMALOUS INELASTIC HE-ATOM SCATTERING INTENSITIES FOR THE VIBRATIONAL-MODES OF ALKALI-METALS ON GRAPHITE

被引：14

作者：

CUI, JH

WHITE, JD

DIEHL, RD

机构：

[1] Physics Department, Perm State University, University Park

来源：

SURFACE SCIENCE | 1993年 / 293卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(93)90232-9

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：

Low-energy (2.3-4.4 meV) vibrational modes have been observed from K, Rb, and Cs chemisorbed on the basal plane of graphite using inelastic He-atom scattering. These modes are interpreted as phonons propagating in the sagittal plane and polarized parallel to the surface plane. Modes having perpendicular polarization were undetectable. This anomalous result may be due to the coupling of the He atoms to the conduction electrons in the surface.

引用

页码：L841 / L846

页数：6

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