Abstract
The ESP determined through electron capture by small angle reflection of deuterons at well oriented Ni(110) surfaces is found to be influenced by H 2 adsorption. A coverage of one monolayer reduces the ESP from -96 ± 3% to -8 ± 3%. The - sign indicates predominance of minority spin electrons. Desorption of hydrogen from the nickel surface restores the original polarization measured at a clean (110) nickel surface.
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