A simple theory for the core-level binding energy shifts at the surfaces of binary alloys AxB1-x is presented. Results are given for the surface core-level shifts of Ni in NixCu1-x alloys and Pd in PdxAg1-x alloys. It has been shown that the surface core-level shifts may depend sensitively on surface segregation. {\textcopyright} 1981.

Vijay Kumar

Center for Informatics

D. Tom{\'{a}}nek

K. Bennemann H.

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