Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy

Tatsuya Mori; Maiko Masubuchi; Yasuhiro Fujii; Suguru Kitani; Shinji Kohara; Akihiko Hirata; Hiroko Tokoro; Shin Ichi Ohkoshi; Akitoshi Koreeda; Hitoshi Kawaji; Seiji Kojima

doi:10.1109/IRMMW-THz46771.2020.9370985

Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy

Tatsuya Mori, Maiko Masubuchi, Yasuhiro Fujii, Suguru Kitani, Shinji Kohara, Akihiko Hirata, Hiroko Tokoro, Shin Ichi Ohkoshi, Akitoshi Koreeda, Hitoshi Kawaji, Seiji Kojima

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

To investigate multi-boson peaks (multi-BP), terahertz time-domain spectroscopy was performed on amorphous silicon monoxide (a-SiO), which exhibits unusual disproportion in the nanoscale region where the SiO and Si regions are separated. In the resulting THz spectrum, the BP was observed at 2.4 THz, as a broad asymmetric peak, and the BP frequency was evidently higher than that of silica glass. The results suggest that the higher BP frequency of a-SiO in the infrared spectrum originates from the a-Si cluster region.

Original language	English
Title of host publication	2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020
Publisher	IEEE Computer Society
Pages	55-56
Number of pages	2
ISBN (Electronic)	9781728166209
DOIs	https://doi.org/10.1109/IRMMW-THz46771.2020.9370985
Publication status	Published - 2020 Nov 8
Externally published	Yes
Event	45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020 - Virtual, Buffalo, United States Duration: 2020 Nov 8 → 2020 Nov 13

Publication series

Name	International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume	2020-November
ISSN (Print)	2162-2027
ISSN (Electronic)	2162-2035

Conference

Conference	45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020
Country/Territory	United States
City	Virtual, Buffalo
Period	20/11/8 → 20/11/13

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1109/IRMMW-THz46771.2020.9370985

Cite this

Mori, T., Masubuchi, M., Fujii, Y., Kitani, S., Kohara, S., Hirata, A., Tokoro, H., Ohkoshi, S. I., Koreeda, A., Kawaji, H., & Kojima, S. (2020). Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy. In 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020 (pp. 55-56). [9370985] (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2020-November). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz46771.2020.9370985

Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy. / Mori, Tatsuya; Masubuchi, Maiko; Fujii, Yasuhiro et al.
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020. IEEE Computer Society, 2020. p. 55-56 9370985 (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; Vol. 2020-November).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Mori, T, Masubuchi, M, Fujii, Y, Kitani, S, Kohara, S, Hirata, A, Tokoro, H, Ohkoshi, SI, Koreeda, A, Kawaji, H & Kojima, S 2020, Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy. in 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020., 9370985, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, vol. 2020-November, IEEE Computer Society, pp. 55-56, 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020, Virtual, Buffalo, United States, 20/11/8. https://doi.org/10.1109/IRMMW-THz46771.2020.9370985

Mori T, Masubuchi M, Fujii Y, Kitani S, Kohara S, Hirata A et al. Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy. In 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020. IEEE Computer Society. 2020. p. 55-56. 9370985. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz). doi: 10.1109/IRMMW-THz46771.2020.9370985

Mori, Tatsuya ; Masubuchi, Maiko ; Fujii, Yasuhiro et al. / Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy. 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020. IEEE Computer Society, 2020. pp. 55-56 (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz).

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title = "Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy",

abstract = "To investigate multi-boson peaks (multi-BP), terahertz time-domain spectroscopy was performed on amorphous silicon monoxide (a-SiO), which exhibits unusual disproportion in the nanoscale region where the SiO and Si regions are separated. In the resulting THz spectrum, the BP was observed at 2.4 THz, as a broad asymmetric peak, and the BP frequency was evidently higher than that of silica glass. The results suggest that the higher BP frequency of a-SiO in the infrared spectrum originates from the a-Si cluster region.",

author = "Tatsuya Mori and Maiko Masubuchi and Yasuhiro Fujii and Suguru Kitani and Shinji Kohara and Akihiko Hirata and Hiroko Tokoro and Ohkoshi, {Shin Ichi} and Akitoshi Koreeda and Hitoshi Kawaji and Seiji Kojima",

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doi = "10.1109/IRMMW-THz46771.2020.9370985",

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AU - Mori, Tatsuya

AU - Masubuchi, Maiko

AU - Fujii, Yasuhiro

AU - Kitani, Suguru

AU - Kohara, Shinji

AU - Hirata, Akihiko

AU - Tokoro, Hiroko

AU - Ohkoshi, Shin Ichi

AU - Koreeda, Akitoshi

AU - Kawaji, Hitoshi

AU - Kojima, Seiji

PY - 2020/11/8

Y1 - 2020/11/8

N2 - To investigate multi-boson peaks (multi-BP), terahertz time-domain spectroscopy was performed on amorphous silicon monoxide (a-SiO), which exhibits unusual disproportion in the nanoscale region where the SiO and Si regions are separated. In the resulting THz spectrum, the BP was observed at 2.4 THz, as a broad asymmetric peak, and the BP frequency was evidently higher than that of silica glass. The results suggest that the higher BP frequency of a-SiO in the infrared spectrum originates from the a-Si cluster region.

AB - To investigate multi-boson peaks (multi-BP), terahertz time-domain spectroscopy was performed on amorphous silicon monoxide (a-SiO), which exhibits unusual disproportion in the nanoscale region where the SiO and Si regions are separated. In the resulting THz spectrum, the BP was observed at 2.4 THz, as a broad asymmetric peak, and the BP frequency was evidently higher than that of silica glass. The results suggest that the higher BP frequency of a-SiO in the infrared spectrum originates from the a-Si cluster region.

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Boson Peak Investigation of Unusually Disproportionated Amorphous Silicon Monoxide via Terahertz Spectroscopy

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