%0 Journal Article
%T Electron-correlation effects in appearance-potential spectra of Ni
%A M. Potthoff
%A T. Wegner
%A W. Nolting
%A T. Schlath£¿lter
%A M. Vonbank
%A K. Ertl
%A J. Braun
%A M. Donath
%J Physics
%D 2001
%I arXiv
%R 10.1103/PhysRevB.63.165118
%X Spin-resolved and temperature-dependent appearance-potential spectra of ferromagnetic Nickel are measured and analyzed theoretically. The Lander self-convolution model which relates the line shape to the unoccupied part of the local density of states turns out to be insufficient. Electron correlations and orbitally resolved transition-matrix elements are shown to be essential for a quantitative agreement between experiment and theory.
%U http://arxiv.org/abs/cond-mat/0102331v1