Auger electron spectroscopy as a tool for measuring intramolecular charges of adsorbed molecules

Abstract

A way for the determination of the values of intramolecular charges of adsorbed molecules of some binary dielectrics, based on Auger electron spectroscopy (AES), is proposed. These values can be obtained from the coverage dependences of the ratios of intensities of anion KL₂₃L₂₃ and KL₁L₁ Auger transitions, which are sensitive to the amount of charge at the 2p-orbitals. As an example, MgO adsorbed on Mo(110) is presented.