d-core transitions in ZnTe, CdTe and HgTe

We have measured the reflectivity spectra of monocrystalline ZnTe, CdTe and HgTe between 5 and 35 eV. We have interpreted the sharp structures above approximately 10 eV as transitions originating in the metal uppermost d levels. The structures give a picture of the projected densities of states of the conduction bands and supply a better understanding of their states.