A wide range of materials, like d-wave superconductors, graphene, and topological
insulators, share a fundamental similarity: their low-energy fermionic excitations behave as …

This article reviews the basic theoretical aspects of graphene, a one-atom-thick allotrope of
carbon, with unusual two-dimensional Dirac-like electronic excitations. The Dirac electrons …

The electronic structure of graphene causes its charge carriers to behave like relativistic
particles. For a perfect graphene sheet free from impurities and disorder, the Fermi energy …

Understanding the mechanism of ferromagnetism in carbon-based materials, which contain
only s and p electrons in contrast to traditional ferromagnets based on 3 d or 4 f electrons, is …

We demonstrate that silicene, a 2D honeycomb lattice consisting of Si atoms, loses its Dirac
fermion characteristics due to substrate-induced symmetry breaking when synthesized on …

Low-dimensional materials are of great interest to both theorists and experimentalists, owing
to their novel electronic properties which arise mainly because of a host of quantum …

The unique electronic behaviour of monolayer and bilayer graphene, is a result of the
unusual quantum-relativistic characteristics of the so-called 'Dirac fermions'(DFs) that carry …

We show that Clar's theory of the aromatic sextet is a simple and powerful tool to predict the
stability, the π-electron distribution, the geometry, and the electronic/magnetic structure of …

The magneto-optical absorption properties of graphene multilayers are theoretically studied.
It is shown that the spectrum can be decomposed into sub-components effectively identical …

A review work is done for the electronic and optical properties of graphene nanoribbons in
magnetic, electric, composite, and modulated fields. Effects due to the lateral confinement …