Size Quantization in Planar Graphene-Based Heterostructures: Pseudospin Splitting, Interface States, and Excitons
Mesoscale and Nanoscale Physics
2012-08-08 v1 Other Condensed Matter
Abstract
A planar quantum-well device made of a gapless graphene nanoribbon with edges in contact with gapped graphene sheets is examined. The size-quantization spectrum of charge carriers in an asymmetric quantum well is shown to exhibit a pseudospin splitting. Interface states of a new type arise from the crossing of dispersion curves of gapless and gapped graphene materials. The exciton spectrum is calculated for a planar graphene quantum well. The effect of an external electric field on the exciton spectrum is analyzed.
Cite
@article{arxiv.1208.1464,
title = {Size Quantization in Planar Graphene-Based Heterostructures: Pseudospin Splitting, Interface States, and Excitons},
author = {P. V. Ratnikov and A. P. Silin},
journal= {arXiv preprint arXiv:1208.1464},
year = {2012}
}
Comments
15 pages, 14 figures