Electron density distribution of bilayer nanographene and band structures of boron-carbon-nitride systems

TL;DR

This paper investigates the electronic properties of bilayer nanographene and boron-carbon-nitride systems, focusing on band structures and local density of states using tight binding models for different stacking configurations.

Contribution

It provides a comparative analysis of band splitting and local density of states in bilayer nanographene and BN systems with different stacking arrangements.

Findings

Band splitting observed in alpha stacking structure.

Wave number dependent splitting in beta structure.

Local density of states avoids sites with interlayer hopping.

Abstract

Bilayer graphene nanoribbon with zigzag edge is investigated with the tight binding model. Two stacking structures, alpha and beta, are considered. The band splitting is seen in the alpha structure, while the splitting in the wave number direction is found in the beta structure. The local density of states in the beta structure tend to avoid sites where interlayer hopping interactions are present. The calculation is extended to the boron-carbon-nitride systems. The qualitative properties persist when zigzag edge atoms are replaced with borons and nitrogens.