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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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Large magnetoresistance and Hall effect in paramagnetic black phosphorus synthesized from red phosphorus

TL;DR: In this paper, a high-pressure synthesis of pure phase pleomorphic black phosphorus (BP) from red phosphorus was described, and the conduction tensors were analyzed by a two-band model to determine the carrier concentration and mobility at several temperatures.
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A Defective Graphene Phase Predicted to be a Room Temperature Ferromagnetic Semiconductor

TL;DR: Theoretical calculations based on hybrid exchange density functional theory are used to show that in graphene a periodic array of defects generates a ferromagnetic ground state at room temperature for unexpectedly large defect separations.
Dissertation

Novel nanomaterials for lithium ion batteries and lithium sulfur batteries

S Chen
TL;DR: In this paper, a combination of microwave hydrothermal and one-step hydrogen gas reduction was used to synthesize a high specific capacity of 1407 mAh g-1 for Li-ion batteries.
Journal ArticleDOI

Magnetic ordering of implanted Mn in HOPG substrates

TL;DR: In this paper, the magnetic ordering of implanted manganese carbides in HOPG substrates has been investigated and the authors conclude that the observed Mn ferromagnetic ordering is caused by uncompensated Mn moments on the surface of antiferromagnetic nanocrystals.
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.
Journal ArticleDOI

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.
Journal ArticleDOI

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.
Journal ArticleDOI

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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