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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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Pinning and switching of magnetic moments in bilayer graphene

TL;DR: In this paper, the magnetic properties of the localized states induced by lattice vacancies in bilayer graphene with an unrestricted Hartree-Fock calculation were examined with real-world gate voltages.
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RKKY Interaction in Gapped or Doped Graphene

TL;DR: In this article, the authors used the Feynman's trick to calculate RKKY interaction between two magnetic impurities in pristine graphene using the Green's functions (GF) in the coordinate-imaginary time representation.
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Variable range of the RKKY interaction in edged graphene.

TL;DR: In this paper, the authors examined the range of indirect exchange interaction in magnetically doped graphene systems in the presence of armchair edges using a combination of analytical and numerical Green function approaches.
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Unexpected Ferromagnetism—A Review

TL;DR: In this paper, a literature review combining past and up-to-date studies on magnetism in hexaborides, non-magnetic oxides, and carbon nanostructures is presented.
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Substrate-induced magnetism in epitaxial graphene buffer layers.

TL;DR: It is shown from first principles calculations that graphene buffer layers on SiC(0001) can also show intrinsic magnetism, and adatom density has a profound effect on the spin distribution in the graphene buffer layer, thereby providing a means of engineering magnetism in epitaxial graphene.
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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