Terahertz Time-Domain Spectroscopy and Low-Temperature Specific Heat Investigation of Vitreous Glucose

POSTER

Abstract

The boson peak is a low energy excitation universally observed in the THz region of the amorphous materials. The boson peak of infrared spectra appears in the spectra of α(ν)/ν2 [α(ν) is the absorption coefficient]. In this study, we performed terahertz time-domain spectroscopy on glassy glucose to investigate the boson peak dynamics. Moreover, we determined infrared light-vibration coupling coefficient using the α(ν) and vibrational density of states obtained from the low-temperature specific heat measurement.

*This work was partially supported by JSPS KAKENHI Grants No. 17K14318, No. 18H04476 and No. 26287067, and the Asahi Glass Foundation.

Presenters

  • Tatsuya Mori

    • Division of Materials Science, University of Tsukuba

Authors

  • Tatsuya Mori

    • Division of Materials Science, University of Tsukuba

  • Mikitoshi Kabeya

    • Division of Materials Science, University of Tsukuba

  • Suguru Kitani

    • Laboratory for Materials and Structures, Tokyo Institute of Technology

  • Yasuhiro Fujii

    • Department of Physical Sciences, Ritsumeikan University

  • Jae-Hyon Ko

    • Department of Physics, Hallym University

  • Akitoshi Koreeda

    • Department of Physical Sciences, Ritsumeikan University

  • Hitoshi Kawaji

    • Laboratory for Materials and Structures, Tokyo Institute of Technology

  • Seiji Kojima

    • Division of Materials Science, University of Tsukuba