scispace - formally typeset
Open AccessJournal ArticleDOI

Local defects and ferromagnetism in graphene layers

Reads0
Chats0
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.

read more

Citations
More filters
Journal ArticleDOI

Geometric influence on Ruderman-Kittel-Kasuya-Yosida interactions in zigzag carbon nanotubes.

TL;DR: An analytic description of the spin susceptibility in finite length zigzag carbon nanotubes (CNT) with chirality (n, 0) is derived, which shows that the strongest RKKY interactions are along the edges of the nanotube and in the thermodynamic limit at half filling with spin symmetry.
Journal ArticleDOI

Electronic structure and the minimum conductance of a graphene layer on SiO2 from density functional methods

TL;DR: In this article, the effect of the SiO2 substrate on a graphene film is investigated using realistic but computationally convenient energy-optimized models of the substrate supporting a layer of graphene.
Journal ArticleDOI

Crossed Andreev reflection in graphene-based ferromagnet-superconductor structures

TL;DR: In this paper, the spin-polarized transport of relativistic electrons through a three-terminal graphene-based superconductor bipolar transistor with ferromagnetic leads was investigated.
Journal ArticleDOI

Charged Topological Solitons in Zigzag Graphene Nanoribbons

TL;DR: In this paper, it was shown that topological solitons appear at the interface between degenerate ground states, which are the relevant charge excitations in the system when charge is added to the nanoribbon, the system energetically prefers to create magnetic domains and accommodate the extra electrons in the interfaces rather than setting them in the conduction band.
Journal ArticleDOI

Mechanistic view on efficient photodetection by solvothermally reduced graphene oxide

TL;DR: In this article, the authors have studied solvothermal reduction of graphene oxide in ethylene glycol and photodetection properties of as made RGO-based devices and achieved a responsivity value as high as 0.78 A W−1 with an external quantum efficiency of 62% at a bias of only 0.5 V.
References
More filters
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.
Related Papers (5)