Sensitivity of positron-annihilation-induced Auger-electron spectroscopy to the top surface layer
- 1 January 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 41 (1) , 799-802
- https://doi.org/10.1103/physrevb.41.799
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 ,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.
Keywords
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