# Low frequency Raman study of the Boson peak in a Tellurite-tungstate glass over temperature

## TL;DR

This study investigates the temperature-dependent low frequency Raman spectra of tellurite-tungstate glass, revealing that the Boson peak and related features likely originate from vibrational modes of structural units.

## Contribution

It provides a simplified fitting approach and insights into the origin of the Boson peak in tellurite-tungstate glass through temperature-dependent Raman analysis.

## Key findings

- Peaks fitted with two log-Gaussians, indicating negligible quasi-elastic scattering.
- Peaks show similar temperature behavior, suggesting a common origin.
- Depolarization ratio supports link to vibrational modes of structural units.

## Abstract

In this work we present our findings performing low frequency Raman measurements over temperature in a tellurite-tungstate glass sample. The spectra could be fitted by using only two log-Gaussians, which suggests that quasi-elastic light scattering is negligible. The positions of the peaks have the same temperature behavior, being the higher frequency one refered as Boson Peak in literature. The similar temperature behavior and depolarization ratio indicates that the peaks may have the same origin, being linked to the tranversal and longitudinal vibrations of some unit.