Mohammad Sherafati

TL;DR: In this article, the authors study the exchange interaction between two magnetic impurities in undoped graphene (the Ruderman-Kittel-Kasuya-Yosida [RKKY] interaction) by directly computing the lattice Green's function for the tight-binding band structure for the honeycomb lattice.

TL;DR: In this paper, the electronic structure of graphene with a single substitutional vacancy was studied using a combination of the density-functional, tight-binding and impurity Green's function approaches. And the results showed that the long-range nature of the V? wave function is a unique feature of the graphene vacancy and that this may be one of the reasons for the widely varying relaxed structures and magnetic moments reported from the supercell band calculations in the literature.

TL;DR: In this paper, the authors obtained an analytical expression for the Ruderman-Kittel-Kasuya-Yosida interaction in elctron- or hole-doped graphene for linear Dirac bands.

TL;DR: It is demonstrated in a clean way that phase separation is at the origin of CMR in LaMnO3, and the insulator-to-metal transition at 32 GPa is well described using the percolation theory.

TL;DR: In this paper, the electronic structure of graphene with a single substitutional vacancy using a combination of the density-functional, tight-binding, and impurity Green's function approaches was studied with the allelectron spin-polarized linear augmented plane wave (LAPW) method.