Impurity effects on Dirac modes in graphene armchair nanoribbons
Disordered Systems and Neural Networks
2022-12-14 v1
Abstract
We consider finite ribbons of graphene with armchair orientation of their edges to study in detail impurity effects on specific Dirac-like modes. In the framework of Anderson hybrid model of impurity perturbation, a possibility for Mott localization and for opening of a mobility gap under local impurity perturbations is found and analyzed in function of this model parameters: the impurity energy level, its hybridization with the host Dirac modes, and the impurity concentration. Possible electronic phase states in such disordered system and subsequent phase transitions between them are discussed.
Keywords
Cite
@article{arxiv.2209.06721,
title = {Impurity effects on Dirac modes in graphene armchair nanoribbons},
author = {Yuriy G. Pogorelov and Vadim M. Loktev},
journal= {arXiv preprint arXiv:2209.06721},
year = {2022}
}
Comments
11 pages, 15 figures