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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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Edge states and distributions of edge currents in semi-infinite graphene

TL;DR: In this paper, the distributions of edge currents in semi-infinite graphene under a uniform perpendicular magnetic field are investigated and it is shown unambiguously that the edge current is finite at the armchair edge but vanishes at the zigzag edge.
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Spin-polarized semiconductors: tuning the electronic structure of graphene by introducing a regular pattern of sp3 carbons on the graphene plane.

TL;DR: A novel approach to tune graphene's electronic structures as well as to form ferromagnetic semiconductive graphene with different coverage is provided.
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Anomalous room temperature magnetorheological behavior of colloidal graphene nanogels

TL;DR: In this paper, a novel graphene nanogels with infused graphene nanoplatelets has been synthesized and the colloidal gel phase enables harnessing of magnetorheology from such weak moment systems.
Dissertation

Probing and manipulating graphene physics at the atomic level

TL;DR: The microscopias de efecto tunel (STM) as discussed by the authors have proven to be a powerful tool for fisica de grafeno 2D materiales.

Novel behaviors in fermion systems with point-like Fermi surfaces and singular interactions

TL;DR: Shively et al. as discussed by the authors used the gap equation for the excitonic order parameter to obtain critical interaction strength for a variety of power-law interactions and densities of states in nodal fermions.
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.
Journal ArticleDOI

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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