Relation between Electronic Structure and Thermoelectric Properties of Heusler-Type Ru₂VAl Compounds

• 出版年: Crystals
• 主要な著者: Hidetoshi Miyazaki, Shin-ichi Kimura, Kensuke Onishi, Takehiko Hihara, Masato Yoshimura, Hirofumi Ishii, Masashi Mikami, Yoichi Nishino
• フォーマット: 論文
• 言語: 英語
• 出版事項: MDPI AG 2022-10-01
• 主題: Heusler-type Ru₂VAl; first-principle calculation; photoemission spectroscopy; infra-red spectroscopy; thermoelectric properties; electronic structure
• オンライン･アクセス: https://www.mdpi.com/2073-4352/12/10/1403
• ISSN: 2073-4352

We investigated Heusler-type Ru₂VAl, a candidate material for next-generation thermoelectric conversion, by first-principle calculations of its thermoelectric conversion properties and direct experimental observations of its electronic structures, employing photoemission and infrared spectroscopy. Our results show that Ru₂VAl has a wider pseudogap near the Fermi level compared to Fe₂VAl. Accordingly, a higher thermoelectric conversion performance can be expected in Ru₂VAl at higher temperatures.