Terahertz Time-Domain Spectroscopy and Low-Frequency Raman Scattering of Boson Peak Dynamics of Lithium Borate Glasses

We performed terahertz time-domain spectroscopy and low-frequency Raman scattering on lithium borate glasses to detect the universal boson peak behavior in glassy materials. In addition, the vibrational density of states spectrum was extracted from the low-temperature specific heat measurement data. The light-vibration coupling coefficients of the infrared and Raman were determined and a quantitative analysis was performed.