ORIGIN OF THE -4.4 EV BAND IN CDTE(100)

We calculate the bulk (infinite system), (100)-bulk-projected and (100)-surface-projected Green's functions using the surface-Green's-function matching method and an empirical tight-binding Hamiltonian with tight-binding parameters that describe well the bulk band structure of CdTe. In particular, we analyze the band (B-4) arising at -4.4 eV from the top of the valence band at GAMMA according to the results of Niles and Hochst and at -4.6 eV according to Gawlik et al., both obtained by angle-resolved photoelectron spectroscopy. We give a theoretical description of this band.