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

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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
JournalJournal of Magnetism and Magnetic Materials
Volume272-276
Issue numberSUPPL. 1
DOIs
Publication statusPublished - 2004 May
Externally publishedYes

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Nanorings
Graphite
Magnetism
Graphene
graphene
indication
Carbon
Hubbard model
carbon
Ferromagnetism
Nanotubes
Ground state
ferromagnetism
ribbons
nanotubes
Atoms
ground state
predictions
atoms

Keywords

  • Edge states
  • Flat-band ferromagnetism
  • Nanographite

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Indication of flat-band magnetism in theoretically designed nanographite with modified zigzag edges. / Kusakabe, K.; Maruyama, M.; Tsuneyuki, S.; Akagi, K.; Yoshimoto, Y.; Yamauchi, Jun.

In: Journal of Magnetism and Magnetic Materials, Vol. 272-276, No. SUPPL. 1, 05.2004.

Research output: Contribution to journalArticle

Kusakabe, K. ; Maruyama, M. ; Tsuneyuki, S. ; Akagi, K. ; Yoshimoto, Y. ; Yamauchi, Jun. / Indication of flat-band magnetism in theoretically designed nanographite with modified zigzag edges. In: Journal of Magnetism and Magnetic Materials. 2004 ; Vol. 272-276, No. SUPPL. 1.
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