Extended Appearance-Potential Fine-Structure Analysis of Fe(110) Surface

Abstract

In order to study the surface structure of a material, a method for detecting the extended appearance-potential fine-structure has been developed by measuring the peak-to-peak height of a particular Auger signal. Since Auger electron spectroscopy is highly sensitive to surface elements, the detection method is considered to be very useful to study atomic surface structures. The Fourier transform of the detected extended appearance-potential fine-structure curve of Fe(110) surface has exhibited a prominent peak at 2.47 Å, which is about 0.01 Å less than the nearest-neighbor bulk spacing in iron.