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- W2098486525 abstract "We study from first principles the magnetism in graphene induced by single carbon atom defects. For two types of defects considered in our study, the hydrogen chemisorption defect and the vacancy defect, the magnetism due to the defect-induced extended states has been observed. Calculated magnetic moments are equal to 1 µB per hydrogen chemisorption defect and ∼1.5 µB per vacancy defect. The magnetic ordering is either ferromagnetic or antiferromagnetic, depending on whether the defects correspond to the same or to different hexagonal sublattices of the graphene lattice, respectively. The last two decades were marked with the discoveries of new allotropic modifications of carbon and related nanostructures. Graphene, the single two-dimensional sheet of graphite, is the starting point for many carbon nanomaterials, which are commonly called nanographites. These materials, being diverse in atomic structure, display a wide range of electronic properties. Magnetism of carbon materials (1) is of particular interest since in current technological applications magnetic materials are based on d and f elements. New carbon-based magnetic materials would greatly extend the limits of technologies relying on magnetism. Even more promising is the application of such materials in the design of nanoscale magnetic and spin electronics devices. While ideal graphite and carbon nanotubes are in itself nonmagnetic, experimental" @default.
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- W2098486525 date "2007-04-01" @default.
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- W2098486525 title "Magnetism induced by single-atom defects in nanographites" @default.
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