2013 Fiscal Year Final Research Report
Development of reflection terahertz time-domain spectroscopy and investigation of strongly correlated system derived from rattling phonons
| Project/Area Number |
24740194
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Condensed matter physics I
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| Research Institution | University of Tsukuba |
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Principal Investigator |
MORI Tatsuya 筑波大学, 数理物質系, 助教 (30598074)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | フォノン物性 / テラヘルツ時間領域分光 / 熱電材料 / 誘電体 / ソフトマター |
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| Research Abstract |
Some of the clathrate compounds exhibit a characteristic behavior which is found in the glass universally, in the temperature dependence of the thermal conductivity and specific heat, in spite of the crystals. To clarify the behavior of the rattling phonon which is a low-frequency large-amplitude vibration of atoms encapsulated in the large cage, type-VIII Ba8Ga16Sn30 has been investigated using terahertz time-domain spectroscopy (THz-TDS).
In addition, as a development of THz spectroscopy techniques, a new correction method of phase shift error in the experiment of a reflection THz-TDS has been established using the data obtained by a transmission THz-TDS.
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[Journal Article] Anomalous Infrared Spectra of Hybridized Phonons in Type-I Clathrate Ba8Ga16Ge302013
Author(s)
Kei Iwamoto, Shunsuke Kushibiki, Hironori, Honda, Shuhei Kajitani, Tatsuya Mori, Hideki Matsumoto, Naoki Toyota, Koichiro Suekuni, Marcos A. Avila, and Toshiro Takabatake
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Journal Title
Journal of the Physical Society of Japan
Volume: Vol.82
Pages: 024601 (1-7)
DOI
Peer Reviewed
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