Ba8 Ga16 Sn30 with type-I clathrate structure: Drastic suppression of heat conduction

M. A. Avila, K. Suekuni, K. Umeo, H. Fukuoka, S. Yamanaka, T. Takabatake

研究成果: ジャーナルへの寄稿学術誌査読

99 被引用数 (Scopus)

抄録

For the past decade, intermetallic clathrates have been rattling their way into mainstream research in thermoelectrics. The unusual vibrations of their guest ions inside oversized cages interfere with the cage phonons while leaving the electronic flow intact, providing an exotic way to achieve a best-of-both-worlds scenario in terms of electrical and thermal transport in the same material. Here, we present the structural and thermoelectric properties of Ba8 Ga16 Sn30 single crystals grown in the type-I clathrate structure (ß-BGS), showing one of the lowest recorded thermal conductivities κ (T) for any bulk compound, while still behaving electronically as a heavily doped n -type semiconducting crystal.

本文言語英語
論文番号041901
ジャーナルApplied Physics Letters
92
4
DOI
出版ステータス出版済み - 2月 8 2008
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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