2021/02/22 by Pragya Shukla, Shukla, Pragya
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Optical properties and cooling technologies in crystalline materials #Phase-change materials and chalcogenides #Semiconductor materials and interfaces #Soft Condensed Matter (cond-mat.soft) #Statistical Mechanics (cond-mat.stat-mech)
paper · pdf · doi:10.48550/arxiv.2102.11216
openalex publication_date 2021/02/22 · openalex created_date 2021/08/30 · openalex updated_date 2026/07/28
Based on a description of an amorphous solid as a collection of coupled nanosize molecular clusters referred as basic blocks, we analyse the statistical properties of its Hamiltonian. The information is then used to derive the ensemble averaged density of the vibrational states (non-phonon) which turns out to be a Gaussian in the bulk of the spectrum and an Airy function in the low frequency regime. A comparison with experimental data for five glasses confirms validity of our theoretical predictions.