Spectral functions in amorphous metals and the anomalous dispersion of electrons

Abstract

Abstract Using computer simulations we have calculated the spectral function for tightly bound s-states in an amorphous transition metal taking into account the hybridization with the d-band. Our results show that a modified s-band persists through the d-band and that the dispersion curve is S-ghaped, analogous to anomalous dispersion in optics.