Long-Range Quasielastic Scattering of Low-Energy Electrons by Conduction-Band Surface Plasmons on Si(111)7×7
- 8 April 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 54 (14) , 1573-1576
- https://doi.org/10.1103/physrevlett.54.1573
Abstract
Conduction-band surface-plasmon excitations are seen to contribute to the quasielastic scattering of low-energy electrons from clean Si(111)7×7 surfaces. We have analyzed these observations by means of a multiple-scattering theory and show that these excitations are localized below the surface space-charge layer. A comparison of the deduced surface-charge-density profile is in good agreement with the Fermi-level pinning at this surface.Keywords
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