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.read more
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Magnetic effects in sulfur-decorated graphene
Choongyu Hwang,Choongyu Hwang,Shane A. Cybart,Shane A. Cybart,S. J. Shin,S. J. Shin,Sooran Kim,Kyoo Kim,Tatiana G. Rappoport,Stephen Wu,Stephen Wu,Chris Jozwiak,Alexei V. Fedorov,Sung-Kwan Mo,Dong-Kyung Lee,Dong-Kyung Lee,Byung Il Min,Eugene E. Haller,Eugene E. Haller,Robert C. Dynes,Robert C. Dynes,Robert C. Dynes,A. H. Castro Neto,Alessandra Lanzara,Alessandra Lanzara +24 more
TL;DR: In this paper, the magnetic effects of graphene, a prototypical non-magnetic two-dimensional semi-metal, in the proximity with sulfur, a diamagnetic insulator, were investigated.
Journal ArticleDOI
Selective generation and amplification of RKKY interactions by a p − n interface
TL;DR: In this paper, the authors proposed a physical mechanism to generate and selectively amplify anisotropic Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions between two local spins.
Posted Content
Controlling local moment formation and local moment interactions in bilayer graphene
TL;DR: In this paper, local moment formation for adatoms on bilayer graphene (BLG) within a mean-field theory of the Anderson impurity model is studied. But the effect of varying the chemical potential, as well as varying an electric field perpendicular to the bilayer, has been shown to lead to regimes where local moments can be turned on or off by applying modest external electric fields.
Dissertation
First-principles study of the electronic and magnetic properties of defective carbon nanostructures
Gomes dos Santos,Elton José +1 more
TL;DR: In this article, the SIESTA method, based on density functional theory (DFT), was used as the main tool to compute all chemical and physical properties of the studied systems, and other ab initio method was also used in the simulations, the VASP code, which using a different methodology based on plane waves and projector-augmented wave potentials (PAW), allows us to check the possible limitations of the pseudopotentials and localized basis set used in sIESTA.
Journal ArticleDOI
Induced magnetic moment in graphene with a nonmagnetic impurity
M Inglot,V K Dugaev,V K Dugaev +2 more
TL;DR: In this paper, a two-dimensional crystalline monolayer of carbon atoms with a single non-magnetic impurity was considered and the wave function and energy of impurity states, as well as the induced magnetic moment associated with polarization of the electron system were calculated.
References
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