Title

The normal modes at the surface of Li and Mg

Document Type

Article

Publication Date

5-15-1992

Abstract

Angle-resolved reflection inelastic electron scattering has been used to measure the dispersion of the electron-gas collective modes at the surface of Li(110) and Mg(0001). The relatively strong crystal potential in Li shifts the surface plasmon energy from the value predicted by free electron theory, but the dispersion for small q{norm of matrix} is still negative. For Mg the band structure has little effect and the energy and dispersion of the surface plasmon and multipole mode are normal. © 1992.

Publication Source (Journal or Book title)

Surface Science

First Page

551

Last Page

555

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