Indication of flat-band magnetism in theoretically designed nanographite with modified zigzag edges

K. Kusakabe, M. Maruyama, S. Tsuneyuki, K. Akagi, Y. Yoshimoto, J. Yamauchi

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Based on our theoretical prediction of magnetic nanographite, we examined magnetism in various graphitic structures in nanometer scale using the first-principles calculation. When di-hydrogenated carbon atoms are created at a zigzag edge, high-spin ground states are found in carbon nanorings, which are short zigzag nanotubes, as well as graphene structures. The maximum total spin is proportional to the length of graphene ribbon or the diameter of the nanoring. The magnetism is interpreted as a realization of flat-band ferromagnetism known in the Hubbard model on bipartite lattices.

本文言語English
ページ(範囲)e737-e738
ジャーナルJournal of Magnetism and Magnetic Materials
272-276
SUPPL. 1
DOI
出版ステータスPublished - 2004 5
外部発表はい

ASJC Scopus subject areas

  • 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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