Dispersion of Surface-Plasmon at Clean Si(001)-2×1 Surface
- 1 October 1981
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 20 (10) , L745
- https://doi.org/10.1143/jjap.20.l745
Abstract
Inelastic low-energy-electron-diffraction measurements on a clean Si(001)-2×1 surface were made. Surface cleanliness was verified by Auger analysis. The elastic and inelastic energy intensity profiles of the (00) spot were measured to select incident conditions amenable to a kinematic analysis of the energy loss profiles. The surface-plasmon dispersion relation for Si(001)-2×1 surface was derived from the inelastic data using a conservation-law model. The dispesion curve decreases as the momentum parallel to the surface increases.Keywords
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