We have investigated the reconstruction, electronic and magnetic properties of graphene nanoribbons using density functional theory structure optimization and electronic structure calculations. In order to obtain proper edge states and their spin polarizations, we generate wide enough edge hydrogenated graphene nanoribbons that have not only mostly considered armchair and zigzag geometries both...

The history of silicon nitride (Si3N4) has been described previously; detailed analyses of particles of meteroritic rock have been shown to contain silicon nitride crystals, suggesting that this material exists naturally in the galaxy.1 Synthetic Si3N4 was probably developed by Deville and Wöhler in 1859. Commercial interest in this material increased in the 1950s, as the material properties of...

Abstract Graphene nanoribbons synthesized using bottom-up approaches can be structured with atomic precision, allowing their physical properties to precisely controlled. For applications in quantum technology, the manipulation of single charges, spins or photons is required. However, achieving this at level graphene experimentally challenging due difficulty contacting individual nanoribbons, pa...

Investigation of ripple-limited low-field mobility in large-scale graphene nanoribbons" (2013).

The microstructure and interfacial fracture energy of silicon nitride/boron nitride fibrous monoliths, GBN, were determined as a function of starting silicon nitride composition and temperature using the method described by Charalambides. The glassy phase created by the sintering aids added to the silicon nitride cells was shown to migrate into the boron nitride cell boundaries during hot-press...

Branched left-handed twisted mesoporous silica nanoribbons were prepared via a template method.

: In this paper, electronic properties of BC2N nanoribbons with zigzag edges are studied theoretically using a tight binding model and the first-principles calculations based on the density functional theories. The zigzag BC2N nanoribbons have the flat bands when the atoms are arranged as B-C-N-C along the zigzag lines. In this arrangement, the effect of charge transfer is averaged since B and ...

We demonstrate that the giant magnetoresistance can be switched off (on) in even- (odd-) width zigzag graphene-like nanoribbons by an atomistic gate potential or edge disorder inside the domain wall in the antiparallel (ap) magnetic configuration. A strong magneto-thermopower effect is also predicted that the spin thermopower can be greatly enhanced in the ap configuration while the charge ther...

Graphene nanoribbons can be folded into a double layer system keeping the two layers decoupled. In the quantum Hall regime folds behave as a new type of Hall bar edge. We show that the symmetry properties of the zero Landau level in metallic nanoribbons dictate that the zero energy edge states traversing a fold are perfectly transmitted onto the opposite layer. This result is valid irrespective...