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Research Article | Open Access

A Unified Geometric Rule for Designing Nanomagnetism in Graphene

Decai Yu1, Elizabeth M. Lupton1, H. J. Gao2, Chao Zhang3, Feng Liu1( )
Department of Materials Science and Engineering University of Utah Salt Lake CityUT 84112 USA
Institute of Physics Chinese Academy of ScienceBeijing 100080 China
School of Engineering Physics University of WollongongNSW 2522 Australia
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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.

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Keywords

Nanomagnetismgraphene-based nanostructuresmagnetic ordering

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Nano Research
Volume 1 Issue 6,
December 2008
Pages 497-501
DOI: 10.1007/s12274-008-8053-0

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Cite this article:
Yu D, Lupton EM, Gao HJ, et al. A Unified Geometric Rule for Designing Nanomagnetism in Graphene. Nano Research, 2008, 1(6): 497-501. https://doi.org/10.1007/s12274-008-8053-0

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Received: 30 September 2008
Revised: 04 November 2008
Accepted: 14 November 2008
Published: 01 December 2008
© Tsinghua Press and Springer-Verlag 2008

This article is published with open access at Springerlink.com