Terahertz time-domain spectroscopic study on an oxide glass with entropic elasticity

POSTER

Abstract

For disordered systems, universal excitation called boson peak appears in the terahertz range. In addition, for polymeric glasses, fractal dynamics, so-called fracton, is expected to appear above boson peak frequency as a result of self-similarity of monomer unit. In this study, we performed terahertz time-domain spectroscopy on an oxide glass with entropic elasticity: mixed alkali metal metaphosphate glass with the chemical composition Li0.25Na0.25K0.25Cs0.25PO3, to detect the boson peak and fracton. Obtained spectra are compared with results of low-frequency Raman scattering and low-temperature specific heat measurement.

Presenters

  • Jeonghyuk Kim

    • Division of Materials Science, University of Tsukuba
    • Univ of Tsukuba
    • University of Tsukuba

Authors

  • Jeonghyuk Kim

    • Division of Materials Science, University of Tsukuba
    • Univ of Tsukuba
    • University of Tsukuba

  • Tatsuya Mori

    • Division of Materials Science, University of Tsukuba

  • Seiji Inaba

    • Research Center, AGC Incorporated

  • Takanari Kashiwagi

    • Division of Materials Science, University of Tsukuba
    • Univ of Tsukuba
    • University of Tsukuba

  • Yasuhiro Fujii

    • Department of Physical Sciences, Ritsumeikan University

  • Suguru Kitani

    • Materials and Structures Laboratory, Tokyo Institute of Technology

  • Hitoshi Kawaji

    • Materials and Structures Laboratory, Tokyo Institute of Technology

  • Akitoshi Koreeda

    • Department of Physical Sciences, Ritsumeikan University

  • Soo Han Oh

    • Department of Physics, Hallym University

  • Jae-Hyeon Ko

    • Department of Physics, Hallym University

  • Seiji Kojima

    • Division of Materials Science, University of Tsukuba