Terahertz Dynamics of Sodium Silicate Glass Investigated by Terahertz Time-Domain Spectroscopy

Yu Duan,Yasuhiro Fujii,Suguru Kitani,Hiroyuki Hijiya,Akitoshi Koreeda,Jae-Hyeon Ko,Yohei Yamamoto,Tatsuya Mori

2021 46TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ)（2021）

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摘要

We performed terahertz time-domain spectroscopy, low-frequency Raman scattering and low-temperature specific heat measurements to investigate different compositions of sodium silicate glasses. The boson peak (BP) behavior was successfully detected in all measurements. The BP frequency was found to be insensitive to Na2O composition. Additionally, comparing the Raman spectrum and terahertz absorption spectrum confirmed that the BP vibration mode is a combination of different fundamental vibration modes.

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关键词

terahertz dynamics,sodium silicate glass,terahertz time-domain spectroscopy,low-temperature specific heat measurements,BP frequency,terahertz absorption spectrum,low-frequency Raman scattering,fundamental vibration modes,Na2O-SiO2

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