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Local defects and ferromagnetism in graphene layers

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TLDR
In this article, the changes in the electronic structure induced by lattice defects in graphene planes were studied and it was shown that lattice distortions give rise to localized states at the Fermi level.
Abstract
We study the changes in the electronic structure induced by lattice defects in graphene planes. In many cases, lattice distortions give rise to localized states at the Fermi level. Electron-electron interactions lead to the existence of local moments. The RKKY interaction between these moments is always ferromagnetic, due to the semimetallic properties of graphene.

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Electronic and Magnetic Behaviors of Hydrogen Functionalized Graphene Nanostructure Material

TL;DR: In this article, the magnetic and electronic properties of partially hydrogen functionalized vertically aligned few layers graphene (FLG) synthesized by microwave plasma enhanced chemical vapor deposition process were investigated. But, the results were limited to a few layers.
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Metal-semiconductor transition of graphene nanoribbons with different addends

TL;DR: In this paper, the metal-semiconductor transition was proved when the H atoms at both sides of ZGNRs are partially substituted by methylene groups, and when one third of H atoms are substituted and the distribution of methylenes is symmetric, the band gap came to about 0.59 eV.
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Enhanced magnetic properties of cobalt-doped graphene nanoribbons

TL;DR: In this article, structural and magnetic properties of reduced graphene nanoribbons (GNRs) and cobalt (Co)-doped GNRs were studied. And the results obtained from VSM analysis is clearly revealed that enhanced saturation magnetization (Ms) from ~13.08 × 10−2
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<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>MN</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math> embedded graphene layers: Tunable decay rate of the RKKY interaction

TL;DR: In this article , a spin-polarized density functional theory (SP-DFT) was employed to study the behavior of 2D anisotropic magnetic layers with Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction.
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Enhanced Interactions of Gas Molecule with Defective Graphene Induced by Strong Coupling Effect between Carbon-Co in Co3O4: A Theoretical Study

TL;DR: In this article , a model of Co3O4 (110B)/defective graphene surface to adsorb NH3 is established and DFT calculation is conducted to study the effects of the defective graphene, Co 3O4 and their coupling effect on adsorption for NH3 and the joint effects of pre-adsorbed O2/H2O.
References
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Journal ArticleDOI

Electric Field Effect in Atomically Thin Carbon Films

TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
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Band Structure of Graphite

TL;DR: In this paper, a perturbation calculation which starts with wave functions of the two-dimensional lattice and is applied to the three-dimensional graphite lattice is described and general features of the structure of the $\ensuremath{\pi}$ bands in the neighborhood of the zone edge are obtained and are expressed in terms of appropriate parameters.
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Induced magnetic ordering by proton irradiation in graphite.

TL;DR: Evidence that proton irradiation of energy 2.25 MeV on highly oriented pyrolytic graphite samples triggers ferro- or ferrimagnetism is provided and magnetic ordering is stable at room temperature.
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Non-Fermi liquid behavior of electrons in the half-filled honeycomb lattice (A renormalization group approach)

TL;DR: In this paper, a system of electrons in the two-dimensional honeycomb lattice with Coulomb interactions is described by a renormalizable quantum field theory similar but not equal to QED3.
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Magnetic nanographite

TL;DR: In this paper, it was shown that hydrogenation of nanographite is able to induce finite magnetization and demonstrated the spontaneous magnetism of a graphene ribbon in which each carbon is bonded to two hydrogen atoms at one edge and to a single hydrogen atom at another edge.
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