Studies of positron trapping at quantum-dot-like particles on metal surfaces

Abstract

The decrease of the Fe M2,3 VV positron annihilation induced Auger signal intensity and the enhancement of the Cu one with enrichment of the Cu content of the Fe-Cu alloy is explained by theoretical calculations as being due to trapping of positrons in the regions of Cu nanoparticles embedded in the top atomic layers of Fe. © 2005 Elsevier B.V. All rights reserved.