Universal Non-Debye Scaling in the Density of States of Amorphous Solids.
Repository Usage Stats
At the jamming transition, amorphous packings are known to display anomalous vibrational modes with a density of states (DOS) that remains constant at low frequency. The scaling of the DOS at higher packing fractions remains, however, unclear. One might expect to find a simple Debye scaling, but recent results from effective medium theory and the exact solution of mean-field models both predict an anomalous, non-Debye scaling. Being mean-field in nature, however, these solutions are only strictly valid in the limit of infinite spatial dimension, and it is unclear what value they have for finite-dimensional systems. Here, we study packings of soft spheres in dimensions 3 through 7 and find, away from jamming, a universal non-Debye scaling of the DOS that is consistent with the mean-field predictions. We also consider how the soft mode participation ratio evolves as dimension increases.
Published Version (Please cite this version)10.1103/PhysRevLett.117.045503
Publication InfoCharbonneau, Patrick; Corwin, Eric I; Parisi, G; Poncet, A; & Zamponi, Francesco (2016). Universal Non-Debye Scaling in the Density of States of Amorphous Solids. Phys Rev Lett, 117(4). pp. 045503. 10.1103/PhysRevLett.117.045503. Retrieved from https://hdl.handle.net/10161/12623.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
More InfoShow full item record
Professor of Chemistry
Professor Charbonneau studies soft matter. His work combines theory and simulation to understand the glass problem, protein crystallization, microphase formation, and colloidal assembly in external fields.