Flat-band ferromagnetism in armchair graphene nanoribbons

Flat-band ferromagnetism in armchair graphene nanoribbons

We study the electronic correlation effects in armchair graphene nanoribbons that have been recently proposed to be the building blocks of spin qubits. The armchair edges give rise to peculiar quantum interferences and lead to quenched kinetic energy of the itinerant carriers at appropriate doping level. This is a beautiful one-dimensional analogy of the Landaulevel formation in two dimensions ...

D band Raman intensity calculation in armchair edged graphene nanoribbons

Ultra-narrow metallic armchair graphene nanoribbons

Graphene nanoribbons (GNRs)-narrow stripes of graphene-have emerged as promising building blocks for nanoelectronic devices. Recent advances in bottom-up synthesis have allowed production of atomically well-defined armchair GNRs with different widths and doping. While all experimentally studied GNRs have exhibited wide bandgaps, theory predicts that every third armchair GNR (widths of N=3m+2, w...

Electronic properties of twisted armchair graphene nanoribbons

We study the effect of twist on the electronic structure of H-terminated armchair graphene nanoribbons, for both relaxed and unrelaxed unit cell size. We investigate the band gap change as a function of the twist angle for different ribbon widths. In the case of unrelaxed unit cell size, the band gap closes for smaller twist angles as opposed to relaxed unit cell size. We calculate strain energ...

Electronic properties of armchair graphene nanoribbons

A. V. Rozhkov,1,2 S. Savel’ev,2,3 and Franco Nori2,4 1Institute for Theoretical and Applied Electrodynamics, Russian Academy of Sciences, 125412, Moscow, Russia 2Advanced Science Institute, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, 351-0198, Japan 3Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom 4Department of Physics, Cent...