Magnetic nanographite

We proposed that hydrogenation of nanographite is able to induce finite magnetization

Koichi Kusakabe

2003

Scholarcy highlights

  • The zigzag edge was found in STM images of nanometer scale graphene, the armchair edge has lower energy than the zigzag edge
  • If a graphene ribbon has a bearded edge on one side and a zigzag edge on the other side, the π network becomes a bipartite lattice with different numbers of sublattice sites
  • The flat band consists of edge states, so that the magnetic moments are localized at both edges and the distribution of moments shows exponential decay in the π network
  • In order to present an example of magnetic nanographite, we will show the electronic band structure of the ribbon which has a completely spin-polarized flat band at the Fermi energy
  • We have shown that a spin-polarized flat band appears in the local spin-density approximation band structure of a graphene ribbon
  • The same effect is expected with fluorination. In this report we have considered a ribbon with a flat graphene structure, but the method is applicable to nanotubes with zigzag edges

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