Theoretical investigations of spin-resolved appearance potential spectroscopy for Fe/Cu(001) overlayers

摘要

We present spin-resolved appearance potential spectroscopy (APS) calculations at the 2p(3/2) edge of Fe in the high-moment ferromagnetic phase of fee Fe/Cu(001) overlayers, based on a single-particle description of the underlying electronic structure. Within the framework of the real-space Korringa-Kohn-Rostoker method, the spectra were calculated in a layer-resolved mode. This allows one to investigate in detail the dependence of the total APS signal-a superposition of weighted layer-signals-as a function of the Fe overlayer thickness. [References: 14]