Modelling of Graphene Nanoribbon Fermi Energy

Thomas–fermi and Poisson Modeling of Gate Electrostatics in Graphene Nanoribbon

We describe a simple graphene nanoribbon and bottom gate system and present numerical algorithms for solving Poisson’s and Thomas–Fermi equations for electrons in the graphene nanoribbon. The Poisson’s equation is solved using finite difference and finite element methods. Using the Poisson and Thomas–Fermi equations we calculate an electrostatic potential and surface electron density in the gra...

Graphene nanoribbon heterojunctions and heterostructures

A graphene nanoribbon memory cell.

S D C1 C2 Over the past few years there has been a surge of interest in graphene, a recently isolated [ 1 ] one-atom-thick layer of carbon atoms arranged in a honeycomb lattice. From the application point of view this interest has mainly been driven by the high carrier mobility of graphene [ 2–4 ] which enables fabrication of fi eld-effect transistors (FETs) with much smaller channel resistance...

Half - metallic Armchair Graphene Nanoribbon

Submitted for the MAR10 Meeting of The American Physical Society Half-metallic Armchair Graphene Nanoribbon FUMIYUKI ISHII, KEISUKE SAWADA, MINEO SAITO, Kanazawa University — Among a variety of applications of graphenes, spintronics applications are considered to be hopeful. For an example, spin transport has been experimentally observed by using graphene layers [1]. There are two types of shap...

Transport properties of armchair graphene nanoribbon junctions between graphene electrodes.

The transmission properties of armchair graphene nanoribbon junctions between graphene electrodes are investigated by means of first-principles quantum transport calculations. First the dependence of the transmission function on the size of the nanoribbon has been studied. Two regimes are highlighted: for a small applied bias transport takes place via tunneling and the length of the ribbon is t...