3 papers
cond-mat.dis-nn2020
Ioffe-Regel criterion and viscoelastic properties of amorphous solids
D. A. Conyuh, Y. M. Beltukov
We show that viscoelastic effects play a crucial role in the damping of vibrational modes in harmonic amorphous solids. The relaxation of a given plane wave is described by a memor…
cond-mat.dis-nn2020
A random matrix approach to the boson peak and Ioffe-Regel criterion in amorphous solids
D. A. Conyuh, Y. M. Beltukov
We present a random matrix approach to study general vibrational properties of stable amorphous solids with translational invariance using the correlated Wishart ensemble. Within t…
cond-mat.dis-nn2019
Application of the random matrix theory to the boson peak in glasses
D. A. Conyuh, Y. M. Beltukov, D. A. Parshin
The density of vibrational states of an amorphous system is studied by using the random-matrix theory. Taking into account the most important correlations between elements o…