Thermoelectric power in transition-metal monosilicides

Akihiro Sakai, Fumiyuki Ishii, Yoshinori Onose, Yasuhide Tomioka, Satoshi Yotsuhashi, Hideaki Adachi, Naoto Nagaosa, Yoshinori Tokura

研究成果: Article査読

40 被引用数 (Scopus)

抄録

We study, both experimentally and theoretically, temperature and electron-density (band-filling) dependence of Seebeck coefficient in B20-type transition-metal monosilicides to critically study the validity of the Boltzmann transport theory based on the band structure as a guiding principle for the materials design of metallic thermoelectric compounds. The global thermoelectric phase diagram for a wide range of materials (CrSi-MnSi-FeSi-CoSi-Co 0.85Ni0.15Si and their interpolating solid solutions) is obtained. Theoretical results derived from the calculated band structure can reproduce a global feature of experimental results except the higher temperature region of FeSi, providing the firm basis to understand the systematics of thermoelectricity in metallic compounds including the role of electron correlation and to develop the material design for larger thermoelectricity.

本文言語English
論文番号093601
ジャーナルjournal of the physical society of japan
76
9
DOI
出版ステータスPublished - 2007 9
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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