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Nano Research

, Volume 1, Issue 6, pp 497–501 | Cite as

A unified geometric rule for designing nanomagnetism in graphene

  • Decai Yu
  • Elizabeth M. Lupton
  • H. J. Gao
  • Chao Zhang
  • Feng LiuEmail author
Open Access
Research Article

Abstract

Based on the underlying graphene lattice symmetry and an itinerant magnetism model on a bipartite lattice, we propose a unified geometric rule for designing graphene-based magnetic nanostructures: spins are parallel (ferromagnetic (FM)) on all zigzag edges which are at angles of 0° and 120° to each other, and antiparallel (antiferromagnetic (AF)) at angles of 60° and 180°. The rule is found to be consistent with all the systems that have been studied so far. Applying the rule, we predict several novel graphene-based magnetic nanostructures: 0-D FM nanodots with the highest possible magnetic moments, 1-D FM nanoribbons, and 2-D magnetic superlattices.

Keywords

Nanomagnetism graphene-based nanostructures magnetic ordering 

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Copyright information

© Tsinghua Press and Springer-Verlag GmbH 2008

Authors and Affiliations

  • Decai Yu
    • 1
  • Elizabeth M. Lupton
    • 1
  • H. J. Gao
    • 2
  • Chao Zhang
    • 3
  • Feng Liu
    • 1
    Email author
  1. 1.Department of Materials Science and EngineeringUniversity of UtahSalt Lake CityUSA
  2. 2.Institute of PhysicsChinese Academy of ScienceBeijingChina
  3. 3.School of Engineering PhysicsUniversity of WollongongWollongongAustralia

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