The effect of disorder and mechanical deformation on the vibrational density of states in 2D silica

The vibrational density of states provides essential information about the characteristics of glassy materials. In particular, both mechanically and structurally induced changes in the vibrational density of states, as well as the emergence of quasilocalized modes, remain a topic of discussion. Thus, this paper aims to shed light on the vibrational density of states in model network glasses. The results show its dependence on the level of disorder and the evolution of the vibrational density of states under shear deformation. We have found that the tendency for eigenvalues to change depends on heterogeneity, deformation state, and the occurrence of rearrangement processes in the network.