Band structure characteristics for CdP2 in the tetragonal modification

We have investigated the density of states for deep local centers and special points of the M0 type in β-CdP2 using amplitude modulation laser spectroscopy. We used impurity absorption of laser and probe radiation for these studies. We observed deep local centers with energy levels in the forbidden gap at a depth of 0.34 (d 1 ), 0.43 (d 2 ), 0.86 (d 3 ), 1.45 (a 1 ) from the bottom of the conduction band and M0 points at a depth of 0.46 and 1.03 eV in the conduction band, and we also confirmed the presence of M0 points at a depth of 0.35 eV in the valence band.