Angular dependence of charge-transfer probabilities betweenand a Ni{100}-c(2×2)-O surface
- 6 July 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (1) , 188-191
- https://doi.org/10.1103/physrevlett.69.188
Abstract
The negative ion fractions of oxygen directly recoiled from a Ni{100}-c(2×2)-O surface have been measured as a function of both azimuthal and exit angles. The data show a pronounced angular dependence of the ion fractions. A theoretical analysis suggests that the probability for charge transfer between an oxygen atom and the surface varies strongly with lateral position. The experiments provide a 3D map of the local electron tunneling rates within the surface unit cell.Keywords
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