Work

On the Relation Between the Boson Peak and the Vibrational Phases in Glasses

Year: 2026

Type: preprint

Abstract: The boson peak is a vibrational feature commonly found in glassy and disordered systems described as the deviation from the scaling of the Debye model ($g({E}){\propto}{E}^2$). Despite much interest, the microscopic nature of the vibrations is only anecdotally discussed. Here we report how the boson peak appears in conjunction with a crossover from localized to extended but non-wave-like and coincide with a maximum in phase coherence and spatial periodicity. Our analyses provide new insights into the microscopic origin of the boson peak across a wide range of glasses.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.39541

Authors: Rasmussen, Philip, Sørensen, Søren S.

Institution: Aalborg University

Language: English

Topic: Material Dynamics and Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Aalborg Universitet, Sichuan University, University of California, Los Angeles

OpenAlex ID: W7215118865

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