Unifying description of the vibrational anomalies of amorphous materials

• Main Authors: Mahajan, Shivam, Ciamarra, Massimo Pica
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2022
• Subjects: Science::Physics; Amorphous Materials; Phonons
• Online Access: https://hdl.handle.net/10356/160012
• Institution: Nanyang Technological University

The vibrational density of states D(ω) of solids controls their thermal and transport properties. In crystals, the low-frequency modes are extended phonons distributed in frequency according to Debye's law, D(ω)∝ω^{2}. In amorphous solids, phonons are damped, and at low frequency D(ω) comprises...