Sensitivity of positron-annihilation-induced Auger-electron spectroscopy to the top surface layer
Physical review. B, Condensed matter1990Vol. 41(1), pp. 799–802
Citations Over TimeTop 10% of 1990 papers
Abstract
We present the first study of positron-annihilation-induced Auger-electron emission from a well defined overlayer-metal system. A 0.5 monolayer of S on Cu(110) produced a fourfold reduction in the positron induced Cu ${M}_{2}$,3VV Auger peak. The attenuation is accounted for by theoretical calculations indicating that the positron surface state is displaced away from the Cu surface by the S overlayer, decreasing the annihilation rate of positrons with Cu core electrons.
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