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PreprintCC BY 4.0arXiv

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

  • Philip Rasmussen
  • Søren S. Sørensen
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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)∝E2). 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.

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Cite

BibTeXRIS
BibTeX
@misc{rasmussen2026relation,
  title = {{On the Relation Between the Boson Peak and the Vibrational Phases in Glasses}},
  author = {Philip Rasmussen and Søren S. Sørensen},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.39541},
  eprint = {2609.39541},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.39541},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - On the Relation Between the Boson Peak and the Vibrational Phases in Glasses
AU  - Philip Rasmussen
AU  - Søren S. Sørensen
PY  - 2026
DA  - 2026/09/30
PB  - arXiv
DO  - 10.48550/arxiv.2609.39541
UR  - https://arxiv.org/abs/2609.39541
AB  - 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)∝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.
ER  -