Charge Exchange in Li Scattering from Si Surfaces
- 17 October 2002
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 89 (19) , 196102
- https://doi.org/10.1103/physrevlett.89.196102
Abstract
Neutral fractions are measured for 4 keV 7Li(+) scattering from clean, hydrogen-covered, and cesiated Si surfaces. The neutral fraction in scattering from clean Si is approximately 26% and it decreases with hydrogen adsorption. When Cs is adsorbed on Si, the neutral fraction does not distinguish the local potential at the Cs sites from the Si sites, unless hydrogen is coadsorbed. These results demonstrate that resonant charge transfer occurs due to coupling of the Li ionization level with the dangling bond surface states, and that the influence of the dangling bonds extends beyond the local scattering sites.Keywords
This publication has 26 references indexed in Scilit:
- Charge transfer in atom-surface collisions: effect of the presence of adsorbates on the surfaceJournal of Physics: Condensed Matter, 1998
- Electron capture and loss in the scattering of hydrogen and oxygen ions on a Si surfaceSurface Science, 1998
- Neutralization of intermediate-velocity Li emerging from Cs- and oxygen-covered Si (100) and GaAs (110) surfacesNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1998
- Resonant charge transfer during scattering of low energy 7Li+ from cesiated surfacesNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1997
- Charge transfer in hyperthermal energy collisions ofwith alkali-metal-covered Cu(001). I. Dynamics of charge state formationPhysical Review B, 1996
- Electronic-Structure Modification and the Adsorption Site of Oxygen on Alkali (Cs) Covered Surfaces Studied by Normal ExitIon SpectroscopyPhysical Review Letters, 1996
- Resonant neutralization of 7Li+ scattered from alkali/Al(100) as a probe of the local electrostatic potentialSurface Science, 1996
- Structural studies of alkali metal adsorption and coadsorption on metal surfacesSurface Science Reports, 1996
- Trajectory-Dependent Charge Exchange in Alkali Ion Scattering from a Clean Metal SurfacePhysical Review Letters, 1995
- Charge exchange in atom-surface collisionsPhysics Reports, 1990