Low energy vibrational excitations in silver borate glasses

Analysis of low temperature specific heat data (1.5 K-25 K) in two glasses of the AgI-Ag2O-B2O3 system reveals that the temperature dependencies of C-p are in qualitative agreement with the predictions of the Soft Potential Model. It has been also found that a decreasing connectivity of the network enhances the deviations of C-p from a T-3 behavior.