Realization of Mott-insulating electrides in dimorphic y b5 S b3

Yangfan Lu, Junjie Wang, Jiang Li, Jiazhen Wu, Shu Kanno, Tomofumi Tada, Hideo Hosono

研究成果: ジャーナルへの寄稿学術誌査読

23 被引用数 (Scopus)

抄録

Electrides are exotic compounds that confine anionic electrons in periodically distributed subnanometer-sized spaces. Such trapped electrons are free from onsite electron-nuclear interaction and exhibit unconventional properties. Here, we report that α- and β-Yb5Sb3 are inorganic electrides exhibiting Mott-insulating features. Anionic electrons are stabilized in the quasi-one- and -zero-dimensional spaces, and give rise to the corresponding electride bands near their Fermi levels. Despite the partially occupied electronic picture, both of these systems exhibit semiconducting conductivity and Curie-type magnetism with S=1/2 moments, demonstrating electron localization. These findings show that anionic electrons can serve as magnetic centers, and inorganic electrides have the potential to act as strongly correlated materials even without the presence of localized atomic orbitals.

本文言語英語
論文番号125128
ジャーナルPhysical Review B
98
12
DOI
出版ステータス出版済み - 9月 14 2018
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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